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Input validationSAP and community
[Part - 1] Enrich CAP based Services with Behaviors using Annotations[Part - 1] Enrich CAP based Services with Behaviors using AnnotationsWalks through CDS annotations that add behaviour beyond CRUD: @readonly and @insertonly take away write, update or delete on an entity or element, each shown with the OData metadata it generates. @mandatory, @assert.unique, @assert.integrity, @assert.format and @assert.range then enforce input checks that @sap/cds runs on write, with the SQL or HANA constraint @assert.unique compiles to and the error code each rejection returns. It names @restrict and @requires but defers them, calling authorization too large a topic for this post.published 2023-01-28
#CAP-TechBytes Input Validation#CAP-TechBytes Input ValidationThe annotations one at a time — @mandatory, @assert.unique, @assert.range including the enum form, @assert.format — each with what it produces. Ends on error handling, which is the part that decides whether any of it is usable from a UI.Thajunniza, published 2023-07-07
CAPVAL: A project is bornCAPVAL: A project is bornThis second CAPVAL post announces CAPVAL version 2.0, made compatible with CAP v8 after breaking changes there, with the fix shown as a custom cds.middlewares.after error handler. It restates the plugin's @validation.message annotation alongside standard annotations such as @mandatory as the input validation mechanic the project builds on, and the release otherwise adds automated tests and release-automation GitHub Actions rather than new annotations.published 2024-08-26
Declarative Programming in CAP: Less Code, More ValueDeclarative Programming in CAP: Less Code, More ValueAn argument for annotations over handlers, made from the case where it is most obvious: repetitive validation logic that could be declared instead of written. Describes what you want rather than how to get it, and lets the runtime decide the how.published 2026-02-05
Extend SAP Cloud Application Programming Model(CAP) Validations with the CAPVAL PluginExtend SAP Cloud Application Programming Model(CAP) Validations with the CAPVAL PluginThe complaint first: the built-in annotations are good for data integrity and poor at telling the user what went wrong, and there is no way to reuse a rule. capval, the plugin the post announces, adds @validation.message alongside the standard annotations rather than replacing them, and @validation.handler for a check written as a class. Published in January 2024, before the 1.2.0 line the README now pairs with @sap/cds 8.0.0 and above; the two annotations it shows are the two the README still documents.published 2024-01-09
Learn how to define constraints declaratively in your CDS modelLearn how to define constraints declaratively in your CDS modelConstraints expressed in the model rather than checked in a handler — the distinction the atlas draws between input validation the framework enforces and validation somebody writes.SAP
Malware scanningSAP only
CAP Foundry: Engineering SAP CAP Applications from Business Intent with Guardrailed AICAP Foundry: Engineering SAP CAP Applications from Business Intent with Guardrailed AICAP Foundry is a prototype that generates a CAP Node.js project with SAP Fiori elements from a written business requirement, discovering the actual data shape from a chosen source — SQLite, a configured SAP HANA HDI container, offline EDMX, live OData through the SAP Destination service, or approved SAP BTP ABAP objects — instead of inventing one. The generated application can carry a Fiori draft lifecycle with optimistic concurrency via ETags and annotation-driven Fiori elements list and object screens, localized independently of the underlying service contract. Attachments can be added with upload, download and delete, gated on a malware-scan status, and the generated project still has to compile, build and pass its generated tests before the run is accepted.Shahid, published 2026-08-20
Rate limitingCommunity only
API Composition: Seamless Enterprise Data Access for Developers and AI AgentsAPI Composition: Seamless Enterprise Data Access for Developers and AI AgentsAPI Composition (formerly Graph, a capability of API Management) curates business data graphs from existing SAP and non-SAP API providers, so a query can navigate and expand relationships across systems through one composed API rather than hand-written integration code. Palak walks through combining SAP S/4HANA warehouse-stock data with Everstream Analytics risk data into one API, then exposing that composed API as an MCP server so an AI agent calls it with the same semantic context — the scenario behind API Management's MCP servers coverage.published 2026-07-27
Edge Integration Cell : Design, deploy and manage APIsEdge Integration Cell : Design, deploy and manage APIsWalks through creating an API artifact in API Management on the customer-managed Edge Integration Cell runtime, including the option to generate the artifact by importing an OpenAPI specification rather than from a URL or by hand. It then attaches an Authentication policy and a Quota step capped at four calls per minute, deploys, and shows both the resulting 401 and the quota-breach error in the Monitor logs. The author frames it as the first of a series on Edge Integration Cell's policies.published 2023-11-15
Graph on Integration Suite: Simplifying Multi-API Data Retrieval with Unified Business Data GraphGraph on Integration Suite: Simplifying Multi-API Data Retrieval with Unified Business Data GraphA hands-on walkthrough of Graph, the API Management feature of SAP Integration Suite also called Business Data Graphs, which exposes several OData APIs as one connected data model behind a single OData V4 or GraphQL endpoint. It covers enabling the capability and its Graph.KeyUser and GraphNavigator.Viewer role collections, creating BTP destinations and a service key for an S/4HANA system, then building a Business Data Graph over the Sales Order and Business Partner APIs so a mirrored SoldToParty association returns both in one call, in place of the two OData requests a Cloud Integration Content Enricher would otherwise merge.published 2026-01-09
Information Map – Introduction Series: Graph in SAP Integration SuiteInformation Map – Introduction Series: Graph in SAP Integration SuiteIntroduces Graph, an enhancement to API Management within SAP Integration Suite that gives developers a single API onto an organisation's business systems, modelled as one semantically connected business data graph, later renamed API Composition. Splits the work between an administrator, who enables SAP BTP destinations to the backend systems and builds the business data graph, and a developer, who explores it in the Graph Navigator tool and builds an application against the resulting Graph API.published 2024-02-21
SAP PI Migration to BTP Integration Suite Patterns and learning experiencesSAP PI Migration to BTP Integration Suite Patterns and learning experiencesWalks through the integration patterns an SAP PI migration project moved onto SAP Cloud Integration iFlows — API Management proxies fronting calls into on-premise SAP systems over XI/SOAP via Cloud Connector, SFTP transfers, and eventing routes — and the operational lessons from running it: sizing JMS queues, choosing exactly-once JMS queues over Cloud Integration's Data Store for XI receiver adapters and at-least-once JMS for XI sender adapters, and workarounds for gaps in the migration tooling. The API Management proxies handle JWT validation against a non-SAP identity provider, IP filtering and OData-to-OpenAPI conversion in front of the iFlows.saikrishna_kalivarapu2, published 2024-12-04
ConfigurationSAP only
CAP Developers - Call to Action to mitigate and Apply Solution provided in SAP Note 3747787CAP Developers - Call to Action to mitigate and Apply Solution provided in SAP Note 3747787Four malicious npm package versions published on 29 April 2026 that exfiltrate credentials and propagate into adjacent repositories, and what a CAP developer should check. A security advisory rather than a technique, and dated precisely for that reason.Yogananda, published 2026-05-01
CAP Heaven? Not Yet — But You Can See It from HereCAP Heaven? Not Yet — But You Can See It from HereAn assessment from someone with Java, Azure and AWS behind them as well as ABAP and Fiori, which is a rarer vantage point than it sounds. The title is the verdict.published 2026-02-07
CAP is important because it's not importantCAP is important because it's not importantAn essay rather than a technique: what CAP actually is, what it gives you, and the case for treating it as foundational precisely because it is not the interesting part of an application. Written in 2019, when that argument still had to be made, and the title is the argument. Also recorded as a Tech Aloud podcast episode and a CodeTalk, both linked from the post.published 2019-11-06
CAP, RAP, or Both: Stop Hiding Behind 'It Depends'CAP, RAP, or Both: Stop Hiding Behind 'It Depends'Opens by refusing the answer every other post on this gives — "both are complementary, choose based on context" — and then commits to a framework, including the parts usually left out: the staffing bias behind the decision, and what to do about a landscape with thousands of Z-objects. Argument, not tutorial.published 2026-04-09
Declarative Programming in CAP: Less Code, More ValueDeclarative Programming in CAP: Less Code, More ValueAn argument for annotations over handlers, made from the case where it is most obvious: repetitive validation logic that could be declared instead of written. Describes what you want rather than how to get it, and lets the runtime decide the how.published 2026-02-05
Don't "let it crash", is this the new CAP guideline?Don't "let it crash", is this the new CAP guideline?Dinu traces a change in error handling in CAP's Node.js runtime: @sap/cds@8.2.0 adds a cds.server.shutdown_on_uncaught_errors config flag, defaulting to true, but invoking an operation with an undefined variable no longer takes the server down, with or without the flag, where the same code crashed it on cds@6 and cds@7, and the author notes the old behaviour was already missing in cds@8.1. It still crashes with features.odata_new_adapter turned off to use the old OData parser, so it is the new OData adapter, like the REST adapter before it, that answers an uncaught error with a 500 instead of taking the process down.Dinu, published 2024-09-06
Getting started with cds.ql in NodeJS for CAP - 101 on how to query dataGetting started with cds.ql in NodeJS for CAP - 101 on how to query dataWalks through cds.ql, the query API @sap/cds gives a Node.js CAP service's custom handlers, with worked SELECT, UPDATE, DELETE and INSERT examples against a sample schema — filters, AND/OR conditions, column projections, ordering, limiting, grouping and joining two entities through a schema view. An added correction notes that cds.tx(req) is no longer needed to run a query in newer CAP versions, contradicting the post's own original guidance.published 2022-06-21
Hello React & Vue : SAP CAP’s New UI Layer is Here!Hello React & Vue : SAP CAP’s New UI Layer is Here!CAP gaining a UI layer for React and Vue, which changes the default assumption that the front end is UI5. Short, and the significance is larger than the length.Yogananda, published 2026-06-25
SAP CAPv7 - Node.js Highlights and ExperiencesSAP CAPv7 - Node.js Highlights and ExperiencesAn account of upgrading a 100+ table CAP Node.js project from v6 to v7, working through breaking changes in @sap/cds 7: event handlers now always receive an array, service paths move under /odata/v4/... unless serve_on_root is set, and cds-serve replaces cds run. It goes deepest on the GraphQL plugin, @cap-js/graphql: the /graphql endpoint it serves, Composition results wrapped in a nodes connection, and offset-based pagination reached through OData's top and skip rather than GraphQL's own limit and offset.published 2023-08-03
SAP Cloud Application Programming Model (CAP) - start hereSAP Cloud Application Programming Model (CAP) - start hereThe orientation post for CAP, published in 2018 and revised in 2020 and again in 2021 with help credited to Iwona Hahn — which is the unusual part: a starting-point index that was maintained rather than left to rot, and says so at the top. Read as the shape of what a newcomer was pointed at, and as a marker of how much of that changed inside three years.published 2018-10-10
What's new in SAP Cloud Application Programming Model – January 2026What's new in SAP Cloud Application Programming Model – January 2026December and January together: the new @assert feature, revised documentation, CDS editor work, and Kyma deployment additions.published 2026-02-09
What's new in SAP Cloud Application Programming Model – November 2025What's new in SAP Cloud Application Programming Model – November 2025The November edition, led by the Status Transition Flows feature presented at reCAP 2025.published 2025-12-08
What's new in SAP Cloud Application Programming Model – September 2025What's new in SAP Cloud Application Programming Model – September 2025The monthly release communication for CAP itself, and this edition carries the MCP servers and the Application Frontend Service integration. Kept because a dated list of what shipped when is the only record of that; three editions are indexed here rather than the whole run.published 2025-10-14
DeploymentSAP and community
🚀 秒速で学ぶ SAP AI Core Agent 開発 🚀 - Part 8 CloudFoundry にデプロイ🚀 秒速で学ぶ SAP AI Core Agent 開発 🚀 - Part 8 CloudFoundry にデプロイPart 8 of a Japanese-language series deploys the Python backend and SAPUI5 chat UI built in earlier parts to SAP BTP, Cloud Foundry Runtime: the backend's manifest.yaml declares its buildpack, memory and start command for cf push, while the UI's MTA project is built with mbt build and uploaded with cf deploy, then has its ENDPOINT constant repointed at the live API's route. It closes with adding the deployed HTML5 app to SAP Build Work Zone, standard edition through Channel Manager's content sync, Content Explorer and a new Site Directory site.Ryota_Ito, published 2025-06-16
A 25x faster mta.yaml build for SAP CAP Node.js projectsA 25x faster mta.yaml build for SAP CAP Node.js projectsOne change to the build descriptor, arrived at after discarding the obvious alternatives — the author reports trying shell scripts, npm caching and offline installs, swapping npm for pnpm, and cds build --no-clean, all of which helped and none of which was this. The value is as much in the record of what was ruled out as in the trick itself.published 2025-03-17
A modern workflow for SAP Cloud Integration with CAP and Azure DevOpsA modern workflow for SAP Cloud Integration with CAP and Azure DevOpsCAP used to build tooling rather than an application: the development workflow for Cloud Integration is limited to what the Integration Suite offers, so the author puts a CAP service and Azure DevOps around it. An unusual use of the framework, and the reason to read it.marcel_schork62, published 2023-06-27
Adding Shell Plugin to SAP Fiori CAP Application and Deploying to Cloud Portal ServiceAdding Shell Plugin to SAP Fiori CAP Application and Deploying to Cloud Portal ServiceA launchpad shell plugin built as a CAP application and deployed to the Cloud Portal service — extending the shell around your app rather than the app itself.Abhinandan2, published 2025-11-24
Build BTP CAP App with Fiori Integration – Part 2: Implementing End to End AppBuild BTP CAP App with Fiori Integration – Part 2: Implementing End to End AppThe implementation half of the series whose first part set up the account and the database: the application itself, end to end.SuryaRamesh, published 2026-04-09
Build, Configure, and Deploy SAP CAP Projects to the CloudBuild, Configure, and Deploy SAP CAP Projects to the CloudA full CAP application with a Fiori UI taken from creation to the cloud in one post. Long, and it covers the configuration between the two that shorter guides skip.Dhanushwar, published 2025-05-20
Deploy a Full-Stack CAP Application in SAP BTPDeploy a Full-Stack CAP Application in SAP BTPFive tutorials taking the Developer's Guide application from running locally to running on BTP — preparation, the deployment itself, role assignment, and integration with Build Work Zone. Published twice, once for Cloud Foundry and once for Kyma, with the same shape and different descriptors; indexed once, because the second is the first with the runtime swapped.SAP
Deploying a CAP Application to SAP Cloud Platform, Kyma runtime & connecting an iOS appDeploying a CAP Application to SAP Cloud Platform, Kyma runtime & connecting an iOS appKyma when it was new on the platform, taken from a CAP application through deployment to a native iOS client on the other end. Written by someone working the mobile side, so the parts about what a device needs from the service are more careful than usual.KRiedelsheimer, published 2020-12-17
Deploying CAP services with the in-memory SQLite databaseDeploying CAP services with the in-memory SQLite databaseIn-memory, deployed to Cloud Foundry — so the data is gone on restart, on purpose. For a service whose datastore does not need to survive anything, which is a narrower case than it sounds and a real one.liam_mischewski, published 2021-05-24
Deploying first CAP Project in SAP Cloud : A Step-by-Step GuideDeploying first CAP Project in SAP Cloud : A Step-by-Step GuideThe terminal route rather than the template wizard, from cds init to a deployed application, with each command written out. For the case where the generated project is the thing you are trying to understand.satyanarayanpradhan, published 2025-07-02
Event Driven SAP CAP on Kyma with Agentic AI and UI Auto RefreshEvent Driven SAP CAP on Kyma with Agentic AI and UI Auto RefreshA prototype, described as one: a plain CAP application made to react to external events on Kyma, with an agent in the loop and the UI refreshing itself rather than being reloaded. Short — it reports what was built and why, not how to rebuild it.Shahid, published 2025-12-01
Extend SAP SuccessFactors on SAP BTP with CAP - Deploy to SAP HANA CloudExtend SAP SuccessFactors on SAP BTP with CAP - Deploy to SAP HANA CloudThe deployment instalment of the author's SuccessFactors extension series — the project already exists and the imported service is already modelled, so this is only the move onto HANA Cloud. Depends on the two posts before it and says so.ale_biagi, published 2022-03-29
From Concept to action: Hands-On with the CAP Operator and the Partner Reference ApplicationFrom Concept to action: Hands-On with the CAP Operator and the Partner Reference ApplicationThe CAP Operator applied to a real application rather than a sample of its own — SAP's Partner Reference Application, taken from plugin integration through containerisation to custom resources. The transition to CRDs is the part that repays attention: it is where the deployment stops being an mta and becomes Kubernetes.ChristianWeiss, published 2026-05-21
Fullstack CAP Application with HANA Cloud (Decoupled Architecture) [Part-6]Fullstack CAP Application with HANA Cloud (Decoupled Architecture) [Part-6]The last part: the Fiori application built and deployed into the HTML5 Application Repository, separately from the service it talks to. Opens with a checklist of the five parts before it, which is the clearest statement of what the whole series covers.sanjucs, published 2026-05-14
HTML5.Timeout for CAP destinations in mta.yaml longer than defaultHTML5.Timeout for CAP destinations in mta.yaml longer than defaultA page and a half about one property that has to be raised when a CAP destination is slower than the default allows — and it now opens with its own correction, dated October 2025, that the property is called timeout rather than HTML5.Timeout, credited to a commenter. The correction is why it is worth keeping.NilsJanen, published 2022-11-09
Joule Studioがリリースされたので早速CAPアプリを自然言語で操作するカスタムスキルを構築してみたJoule Studioがリリースされたので早速CAPアプリを自然言語で操作するカスタムスキルを構築してみたA walkthrough of building a custom Joule Studio skill on a CAP bookshop app: cds add sample and cds add mta scaffold the project and its deployment descriptor, cds compile srv/ --to xsuaa generates the role template behind the @requires: 'admin' check on AdminService from the SAP Authorization and Trust Management service (XSUAA), and mbt build packages the app for deployment to the SAP BTP, Cloud Foundry Runtime. The skill reaches the deployed OData API through the SAP Destination service, configured with the OAuth2 Client Credentials grant using the client ID, secret and token endpoint from the app's XSUAA service key, so Joule answers a natural-language question about a book by its ID.takayuki_tanaka, published 2025-07-30
Kyma Evolution: Transforming SAP Kyma into a tailor-made SaaS Platform for sbs extensionsKyma Evolution: Transforming SAP Kyma into a tailor-made SaaS Platform for sbs extensionsWritten by an extensibility expert building against Cloud ERP under clean core, and it treats Kyma as something to shape rather than to adopt — what has to be added to the runtime before it is a SaaS platform for CAP extensions. The Partner Reference Application post is the hands-on sequel.ChristianWeiss, published 2026-02-03
Multitenant SaaS applications on SAP BTP using CAP? SAP BTP, Kyma Runtime!Multitenant SaaS applications on SAP BTP using CAP? SAP BTP, Kyma Runtime!The Kyma counterpart to the Cloud Foundry Tried-and-True series — the same SaaS application, the same requirements, a Kubernetes runtime underneath. The two code lines were later merged, which the Reloaded post announces.martinfrick, published 2023-04-05
Part 2: Runtime Architecture & Cost efficiency gainsPart 2: Runtime Architecture & Cost efficiency gainsThe technical half of the Kyma Evolution series: why a cluster tuned for CAP multitenancy is not just somewhere to run containers, and where the cost efficiency actually comes from.ChristianWeiss, published 2026-02-04
Quickly Deploy a Sample CAP Application to BTPQuickly Deploy a Sample CAP Application to BTPPrerequisites first and at length — account, dev environment, CLI tools, MBT — because that is where a first deployment actually fails. The deploy itself is short once they are true.AminAlmarsafy, published 2025-11-15
SAP CAP Lessons Learned: Run a CAP app using SQLite on SAP BTP - Cloud FoundrySAP CAP Lessons Learned: Run a CAP app using SQLite on SAP BTP - Cloud FoundrySQLite past the point it is meant to go — deployed, not local. Written as a lesson learned rather than a recommendation, and it pairs with the author's own note that SQLite is single threaded.LucasMagriniRigo, published 2024-12-30
SAP CAP With Prostgres Serice in BTPSAP CAP With Prostgres Serice in BTPA step-by-step walkthrough of a CAP bookshop project on @cap-js/postgres, provisioning PostgreSQL on SAP BTP, hyperscaler option's trial plan through mta.yaml, building the MTA archive and deploying it to Cloud Foundry by hand, then inspecting the deployed database with pgAdmin over an SSH tunnel. It updates an earlier post by Mike Zaschka on the same topic to the package CAP now ships by default, though the manual build-and-deploy sequence it shows predates cds up folding those steps into one command by a day.satya-dev, published 2025-03-30
Simple steps to deploy your CAP project to HANA cloudSimple steps to deploy your CAP project to HANA cloudWritten from the far side of a failed deploy — the author says these are the troubleshooting steps that ended up working, not a designed procedure. Short, and honest about being a record rather than a recommendation.OmPrakashJha, published 2021-02-11
Streamlined Kyma deployment for CAP applicationsStreamlined Kyma deployment for CAP applicationsUnder two thousand characters on getting a CAP application onto Kyma with less ceremony than the long guides require. Short by design.published 2025-12-08
The fastest way to a deployable CAP app on SAP BTP Cloud FoundryThe fastest way to a deployable CAP app on SAP BTP Cloud FoundryThe gap between an application that runs locally and one that runs deployed — binding, bundling, the database connection, authorization — treated as the problem rather than as setup. Since updated for cds up, which is the shortest answer the core now offers, and the post carries that update inline rather than leaving the original standing.published 2025-02-13
The Future of Continuous Delivery for SAP Cloud SDK and SAP Cloud Application Programming ModelThe Future of Continuous Delivery for SAP Cloud SDK and SAP Cloud Application Programming ModelA direction note on the Continuous Delivery Pipeline that Cloud SDK and CAP projects were expected to start from, written by someone on the inside as its future was being decided. Dated 2020, so read it for what was being weighed rather than for what to run — and as one of the few places the reasoning behind a tooling direction was written down at all.published 2020-11-23
Feature togglesSAP and community
Open Sourcing CAP – how to learn more or get involvedOpen Sourcing CAP – how to learn more or get involvedA roundup of CAP's open-sourcing, begun at TechEd the year before, pointing to a webinar recording, a podcast episode and reCAP 2023 talks for background. Among the components it names are a feature toggle library giving Node.js CAP apps live-updatable toggles backed by Redis, a new pluggable database layer with SQLite and PostgreSQL implementations plus a generic SQL layer, and a change tracking component that builds a change history for data from CDS models.Fempel, published 2023-10-02
Streamline User Targeting with Segments in SAP Feature FlagsStreamline User Targeting with Segments in SAP Feature FlagsWalks through segments in the SAP Feature Flags service: reusable, named user lists — up to 1,000 direct user IDs or 15 attribute-based conditional rules per segment — referenced across every feature flag in a service instance instead of redefined per flag. Covers creating a segment from the Feature Flags Dashboard and the per-instance limit of 20 segments, plus the safeguard that a segment in use cannot be deleted.Maksimiliana, published 2026-02-05
Health checksSAP only
#BTP #SAPCAP: Quirky Nuggets (N05-N06)#BTP #SAPCAP: Quirky Nuggets (N05-N06)On SAP BTP, Cloud Foundry Runtime, a one-shot PostgreSQL db-deployer app can be restarted by the platform's default port-type health check inside its 60-second timeout, re-running the deploy and duplicating data in the PostgreSQL database; setting health-check-type to process or http, via cf commands or the app's mta.yaml parameters, avoids it. In CAP, a remote service's entities are imported and consumed through cds.connect.to and queried via a projection, but its functions and actions cannot be projected: they must be redefined in the consuming service's own interface, with the handler forwarding the call to the remote proxy.published 2023-07-27
Job schedulingSAP and community
SAP BTP Cloud foundry Job Scheduling for CAP based projectSAP BTP Cloud foundry Job Scheduling for CAP based projectWalks through binding the SAP Job Scheduling service's trial instance to a CAP application's own custom action endpoint, so the service calls it on a configured interval and keeps a log of each run. The action itself is ordinary application code — here, sending an email through a third-party library — and the trial subaccount the author used could only run the job once, not on a repeating schedule.sunojmichael1, published 2021-03-15
SAP Job Scheduling Service: 🔧 Generate Your Own Client Library from OpenAPI SpecSAP Job Scheduling Service: 🔧 Generate Your Own Client Library from OpenAPI SpecA tutorial on generating a type-safe client library for the SAP Job Scheduling service's REST API from its OpenAPI specification, using the OpenAPI Generator CLI to target Node.js, TypeScript, Java, Python, Go or C#. It walks through OAuth 2.0 client-credentials authentication and the generated client's Jobs API, listing, creating and reading jobs with their cron schedules, and lists what the service's error statuses (400, 401, 404, 409, 429, 503) mean to a caller. It states that the official @sap/jobs-client will be deprecated and tells readers to use a generated client for now.DenisDuev, published 2026-05-04
SAP Job Scheduling Service: Set Job Run Status with the REST API and Node.jsSAP Job Scheduling Service: Set Job Run Status with the REST API and Node.jsWalks through recovering a stuck asynchronous job run in SAP Job Scheduling service: when a triggered app fails to call back, the run stays at ACK_RECEIVED and eventually UNKNOWN, since the scheduler never assumes success or failure on its own. The fix is a Node.js script that reads a downloaded service key, gets an OAuth2 client-credentials token, and calls PUT /scheduler/jobs/{jobId}/schedules/{scheduleId}/runs/{runId} with a success/message body to set the run to FAILURE or SUCCESS by hand.DenisDuev, published 2025-08-11
LoggingSAP only
From Application Logging to Cloud Logging: Service Innovation GuideFrom Application Logging to Cloud Logging: Service Innovation GuideSAP Cloud Logging replaces SAP Application Logging service, moving each customer from a shared multitenant stack to a dedicated, fully isolated one, and this guide sets out what changes with the move: a deployment per compliance region instead of per Cloud Foundry landscape, SAML/IDP-based authentication instead of Cloud Foundry-bound auth, retention that is configurable instead of fixed at seven days, and hourly capacity-unit pricing instead of fixed-size monthly plans. It also states the deprecation timeline for logging on BTP: SAP Application Logging closes to new or renewed CPEA contracts after 2025-07-31, while contracts signed before that date keep their entitlement until their next renewal.Hariharan-Gandhi, published 2024-11-22
Implementing Custom Audit Logging in SAP CAP ApplicationsImplementing Custom Audit Logging in SAP CAP ApplicationsWhere the annotations stop. CAP logs personal-data operations automatically once a model is annotated; this is about the events that are not that — an unauthorised access attempt, a business action somebody wants a trail for — and what writing those yourself involves.gopalanand, published 2025-10-09
SAP Cloud Logging Serviceでコンテナメトリクスを監視するSAP Cloud Logging Serviceでコンテナメトリクスを監視するIn Japanese. Container metrics for a CAP Node.js application into SAP Cloud Logging Service, and the reason it exists is that the obvious route does not apply: Spring Boot Actuator covers the Java side, and Node has no equivalent, so the author reaches for Telegraf instead. The procedure is deliberately independent of application logic — bind the instance, add a startup script and a config file — so it works against an application you already have.kyoneo, published 2024-03-26
MultitenancySAP and community
Building a SaaS Multitenant Application Using SAP CAP Framework — Without a DatabaseBuilding a SaaS Multitenant Application Using SAP CAP Framework — Without a DatabaseMultitenancy with the database taken out, which is a useful way to see what is left: the approuter and its tenant host pattern, the XSUAA instance in shared tenant mode, and the SaaS Registry binding that makes a subscription happen. Everything here is subscription lifecycle and routing, so the parts that are usually entangled with HDI container provisioning are visible on their own.DebashishDas, published 2026-05-06
CAP multitenancy with Work ZoneCAP multitenancy with Work ZoneA gap in the tooling and the manual edit that closes it. cds add portal wires the Portal service, which is deprecated; Work Zone supports multitenancy but has no equivalent command. The author runs the portal command anyway and then rewrites the resource and module config in mta.yaml to point at Work Zone. Short, and honest that it is a workaround rather than a supported path.published 2025-03-14
Event-Driven Multi-Tenant Architecture on SAP BTP with CAP and SAP Event MeshEvent-Driven Multi-Tenant Architecture on SAP BTP with CAP and SAP Event MeshThe two topics that are usually written about separately, taken together — because a shared broker is where tenant isolation stops being automatic. It starts from why microservices are decoupled at all, places Event Mesh among the four broker services BTP offers, and then works through what changes when the publisher and the consumer are multitenant.ale_biagi, published 2024-12-19
From Concept to action: Hands-On with the CAP Operator and the Partner Reference ApplicationFrom Concept to action: Hands-On with the CAP Operator and the Partner Reference ApplicationThe CAP Operator applied to a real application rather than a sample of its own — SAP's Partner Reference Application, taken from plugin integration through containerisation to custom resources. The transition to CRDs is the part that repays attention: it is where the deployment stops being an mta and becomes Kubernetes.ChristianWeiss, published 2026-05-21
Kyma Evolution: Transforming SAP Kyma into a tailor-made SaaS Platform for sbs extensionsKyma Evolution: Transforming SAP Kyma into a tailor-made SaaS Platform for sbs extensionsWritten by an extensibility expert building against Cloud ERP under clean core, and it treats Kyma as something to shape rather than to adopt — what has to be added to the runtime before it is a SaaS platform for CAP extensions. The Partner Reference Application post is the hands-on sequel.ChristianWeiss, published 2026-02-03
Multitenant Business Applications with CAP | Hands-on Video TutorialsMultitenant Business Applications with CAP | Hands-on Video TutorialsA hands-on video series from the SAP HANA Academy on building multitenant applications with CAP, with the written post as its index. Referenced by other posts here as the more current alternative to their own text.dvankempen, published 2021-06-03
Multitenant SaaS applications on SAP BTP using CAP - The Reloaded Version!Multitenant SaaS applications on SAP BTP using CAP - The Reloaded Version!An announcement rather than a tutorial, and it is the one that changes how the rest of the series should be read: the Cloud Foundry and Kyma code lines and their documentation were merged into a single sample, so the runtime becomes a choice inside one repository instead of a fork in the reading path.martinfrick, published 2023-08-09
Multitenant SaaS applications on SAP BTP using CAP? SAP BTP, Kyma Runtime!Multitenant SaaS applications on SAP BTP using CAP? SAP BTP, Kyma Runtime!The Kyma counterpart to the Cloud Foundry Tried-and-True series — the same SaaS application, the same requirements, a Kubernetes runtime underneath. The two code lines were later merged, which the Reloaded post announces.martinfrick, published 2023-04-05
Multitenant SaaS applications on SAP BTP using CAP? Tried-and-True!Multitenant SaaS applications on SAP BTP using CAP? Tried-and-True!The opening post of the Cloud Foundry series, and the one that states the shape of the whole thing: a sample built out of a partner co-innovation project with BCG, then delivered in three graded versions — Basic, Advanced, Expert Features — against a fictional partner's requirements. Read it for the motivation and the map; the implementation is in the three that follow.martinfrick, published 2022-10-19
Multitenant SaaS apps on SAP BTP using CAP? Tried-and-True! – The Advanced VersionMultitenant SaaS apps on SAP BTP using CAP? Tried-and-True! – The Advanced VersionWhat the basic version leaves out and production needs: central user management, and reaching an on-premise S/4HANA from a subscribed tenant. Framed as a step towards production readiness rather than as production itself, which is the honest reading — the Expert Features post is where the rest of that distance is covered.published 2022-11-21
Multitenant SaaS apps on SAP BTP using CAP? Tried-and-True! – The Basic VersionMultitenant SaaS apps on SAP BTP using CAP? Tried-and-True! – The Basic VersionThe version deliberately bounded by what a trial or pay-as-you-go account can hold — the authors point out a PAYG owner can run it for nothing on free-tier services. Scenario first, then the architecture diagram, then a component-by-component walk through what each service in it is for.published 2022-10-24
Multitenant SaaS apps on SAP BTP using CAP? Tried-and-True! – The Expert FeaturesMultitenant SaaS apps on SAP BTP using CAP? Tried-and-True! – The Expert FeaturesThe last of the four, and the one carrying the features that are optional until they are not. Each is written up as a self-contained tutorial in the sample repository rather than inline, so the post is a guide to which of them applies to your landscape.martinfrick, published 2022-11-29
Part 2: Runtime Architecture & Cost efficiency gainsPart 2: Runtime Architecture & Cost efficiency gainsThe technical half of the Kyma Evolution series: why a cluster tuned for CAP multitenancy is not just somewhere to run containers, and where the cost efficiency actually comes from.ChristianWeiss, published 2026-02-04
Platform migrationSAP only
Product Updates for SAP Build Code – June 2025 EditionProduct Updates for SAP Build Code – June 2025 EditionThe Q2-2025 release of SAP Build Code adds a Joule-based SAP HANA Application Migration Assistant extension that automates converting XS Classic and XS Advanced service-layer artifacts — XSJSLIB, XSODATA and XSJS — into CAP service definitions and handlers on SAP HANA Cloud, extending the existing database migration assistant with generative AI. It walks through the "XS Classic to CAP" and "XS Advanced to CAP" templates that trigger the conversion.published 2025-06-27
TelemetrySAP and community
Adding Custom Metrics to a CAP application using cap-js/telementry plugin and SAP Cloud LoggingAdding Custom Metrics to a CAP application using cap-js/telementry plugin and SAP Cloud LoggingWalks through adding a custom OpenTelemetry counter metric to a CAP application on top of @cap-js/telemetry's built-in database-pool metrics, incrementing and decrementing it from a service handler on CREATE and UPDATE of high-urgency incidents. Shows the resulting metric in SAP Cloud Logging's Discover and Visualize screens, building a custom visualisation from the exported metrics data.gopalanand, published 2024-06-27
Implementation of Observability using OpenTelemetry in SAP BTPImplementation of Observability using OpenTelemetry in SAP BTPTracing across a landscape rather than inside one service — BTP applications, integrations, workflows and automations that also call non-SAP microservices the customer runs. That span is where correlation stops being a nice-to-have, and it is the half @cap-js/telemetry's automatic instrumentation does not reach on its own.Deepankar, published 2025-02-05
Kyma Integration with SAP Cloud Logging. Part 2: Let's ship some tracesKyma Integration with SAP Cloud Logging. Part 2: Let's ship some tracesWalks through shipping traces from SAP BTP, Kyma runtime to SAP Cloud Logging: a Kyma TracePipeline resource pointed at the service binding's OTLP endpoint, an Istio Telemetry resource that sets the mesh-wide sampling percentage, and Cloud Logging's Trace Analytics view to filter the resulting spans by service name or request ID. For a multitenant JavaScript CAP application it instruments with @cap-js/telemetry, naming the npm packages to add, and covers Cloud Native Buildpacks and manual Istio header propagation for services outside CAP.gabbi, published 2024-04-19
SAP Cloud Logging Serviceでコンテナメトリクスを監視するSAP Cloud Logging Serviceでコンテナメトリクスを監視するIn Japanese. Container metrics for a CAP Node.js application into SAP Cloud Logging Service, and the reason it exists is that the obvious route does not apply: Spring Boot Actuator covers the Java side, and Node has no equivalent, so the author reaches for Telegraf instead. The procedure is deliberately independent of application logic — bind the instance, add a startup script and a config file — so it works against an application you already have.kyoneo, published 2024-03-26
CI/CD pipelinesSAP only
Get Started with an SAP Cloud Application Programming Model Project in SAP Continuous Integration and DeliveryGet Started with an SAP Cloud Application Programming Model Project in SAP Continuous Integration and DeliveryWiring a CAP project into SAP's hosted CI/CD service, which is the pipeline you get without assembling one.SAP
DebuggingSAP and community
debug a CAP app with UI5 TypeScript UI component with VS Codedebug a CAP app with UI5 TypeScript UI component with VS CodeDebugging both runtimes at once — the CAP server and a UI5 component written in TypeScript, the latter stepped through in its own sources rather than in the transpiled output. Written when TypeScript for UI5 had just become possible, and the combination it sets up is the one CAP's app folder invites.published 2021-11-16
Get an introduction to the cds REPLGet an introduction to the cds REPLcds repl as a way to ask the running model questions directly, which is the fastest route from a suspicion about a query to knowing.SAP
Surviving and Thriving with the SAP Cloud Application Programming Model: Local development hurdlesSurviving and Thriving with the SAP Cloud Application Programming Model: Local development hurdlesThree hurdles in running a CAP application locally: services mocked with cds run --with-mocks return no data across OData associations until the ON clause is hand-written into the imported CDS, an on-premise API reached through the SAP Cloud Connector times out because its proxy is part of destinations and connectivity and reachable only from inside SAP BTP, and a Fiori frontend served from the HTML5 Application Repository needs the HTML5 Repo Mock to reach a local backend at all. It closes with the launch configurations the author uses for debugging cds watch locally and attaching to a running Cloud Foundry instance.maxstreifeneder, published 2023-02-02
Editor supportSAP and community
Add useful Extensions to Dev spaces in SAP Business Application StudioAdd useful Extensions to Dev spaces in SAP Business Application StudioStarts from the point capire makes — that CAP is editor-agnostic and BAS is the preconfigured option — and then does the thing that undoes preconfiguration: adds two extensions to a dev space for initialising data in a CAP application, with the uninstall procedure as well as the install. The uninstall half is what makes it worth keeping.showkath_naseem, published 2022-11-13
An introduction to CDS Graphical Modeler for SAP Business Application StudioAn introduction to CDS Graphical Modeler for SAP Business Application StudioThe announcement of the graphical modeller, from the team that built it — what it draws, how to get a dev space that has it, and what it is for. The starting point for the two posts that follow it, and the record of when this became part of the editor rather than an idea.Xiao-fei_Song, published 2021-04-23
Creating new services using the CDS Graphical Modeler for SAP Business Application StudioCreating new services using the CDS Graphical Modeler for SAP Business Application StudioThe worked half of the introduction, published the same day: a service defined by drawing rather than by typing, projections included. Assumes the setup from the introduction and does not repeat it, so the two are one piece split in two.Xiao-fei_Song, published 2021-04-23
Creating structured types, enums and named aspects using the CDS Graphical ModelerCreating structured types, enums and named aspects using the CDS Graphical ModelerThe modelling constructs that are awkward to draw — structured types, enums, named aspects — done in the graphical modeller rather than in CDL.Xiao-fei_Song, published 2021-05-26
Develop CAP Project with Lazyvim in DockerDevelop CAP Project with Lazyvim in DockerA Docker image running Lazyvim with language server support for CDS, TypeScript and JSON, so a CAP project can be developed with an editing experience comparable to VS Code without leaving the keyboard. Narrow by intent, and the useful general point underneath it is that CAP's editor support reaches anything that speaks LSP.published 2024-03-28
Developing CAP applications in SAP Business Application StudioDeveloping CAP applications in SAP Business Application StudioThe overview written at the point BAS replaced Web IDE, and it is structured as a comparison — each step of building a CAP application, with the difference from the Web IDE experience called out beside it. Useful now mostly for what it records: which parts of CAP development the editor took over, and when.liat_b, published 2020-07-06
Get familiar with your first CAPM project using CDS graphic modelerGet familiar with your first CAPM project using CDS graphic modelerThe modeller as an entry point rather than an aid — a first CAPM project built by drawing it, for the developer who has not yet internalised CDL, annotations and metadata.Jyoti_ranjan, published 2025-07-05
Importing @sap/cds common.cds to your CAP project using the CDS Graphical ModelerImporting @sap/cds common.cds to your CAP project using the CDS Graphical ModelerPulling the common aspects and code lists from @sap/cds into a model through the modeller, so the reuse types appear in the diagram rather than only in the file.Xiao-fei_Song, published 2021-05-06
Importing an external data model using CDS Graphical Modeler for Visual Studio CodeImporting an external data model using CDS Graphical Modeler for Visual Studio CodeWalks through the CDS Graphical Modeler for Visual Studio Code: creating a "Customers" entity, importing an external OData model from an edmx file into the CDS model, and drawing a managed association from the new entity to an entity from the imported namespace. The import happens through the modeler's GUI rather than the cds import command, and the imported edmx becomes a CDS file the modeler can open directly.Xiao-fei_Song, published 2022-05-09
Importing external edmx files to your CAP project using the CDS Graphical ModelerImporting external edmx files to your CAP project using the CDS Graphical ModelerAn EDMX downloaded from the API hub — API_BUSINESS_PARTNER in the example — imported into the CDS model and its entities exposed as projections, done through the graphical modeller rather than cds import. Barely a page long.Xiao-fei_Song, published 2021-05-19
Making CAP Application Development Easier and Faster with the Help of Storyboard in SAP Business Application StudioMaking CAP Application Development Easier and Faster with the Help of Storyboard in SAP Business Application StudioThe Storyboard from the other side — someone who came across it while learning the high-productivity tools, rather than someone who shipped it. It follows the whole arc a CAP project takes through the tool: entities, relationships, services, sample data, a UI, roles, and external resources, each as a thing the diagram can add rather than a file you open.Aryan_Raj_Sinha, published 2023-09-20
Running CAP Node Applications in SAP Business Application StudioRunning CAP Node Applications in SAP Business Application StudioThe Run Configurations tool, which is where binding and mocking live in BAS rather than in a terminal. Three things it does: several named configurations per application in a tree, dependencies bound to real service instances, and OData dependencies mocked. The author notes the configurations are standard launch entries underneath, which is the detail that lets you leave the tool behind if you want to.liat_b, published 2020-10-22
SAP Cloud Application Programming Model（CAP）：概要およびデモ - Part 1SAP Cloud Application Programming Model（CAP）：概要およびデモ - Part 1Introduces SAP Cloud Application Programming Model as an open, opinionated framework that shoulders OData plumbing and database-specific code so a domain is modelled once in CDS, then builds a small bookshop project to show it: @sap/cds-dk's cds init scaffolds the project, cds watch serves it locally with live reload against an in-memory SQLite database, and a CatalogService projects a CDS domain model seeded from CSV files. The result is read as an OData service in the browser and exercised further through a Postman collection, with the optional @sap/vscode-cds extension noted for CDS syntax highlighting and completion in VS Code.rasai, published 2020-12-31
Storyboard for cloud business applications using CAP in SAP Business Application StudioStoryboard for cloud business applications using CAP in SAP Business Application StudioThe first release of the Storyboard, written by the team shipping it. Where the graphical modeller draws the data model, this draws the application: its logical components and the connections between them, alongside an application explorer enhanced in the same release. Short, and it reads as an announcement — the fuller account of using it is Aryan_Raj_Sinha's post two years later.liat_b, published 2021-02-15
Streamlining CAP Development with CDS Graphical Modeler in SAP Business Application StudioStreamlining CAP Development with CDS Graphical Modeler in SAP Business Application StudioThe case for the graphical modeller stated as a scale problem rather than a preference: a model held only as code gets hard to keep in your head once it is large, and the diagram is a second view of the same file. The most recent write-up of the tool here, and the one that treats it as an everyday working aid rather than as a new feature.Jyoti_ranjan, published 2025-07-16
Tips and Tricks for Working with Annotations in CAP Projects using Language Server Protocol (LSP) capabilitiesTips and Tricks for Working with Annotations in CAP Projects using Language Server Protocol (LSP) capabilitiesFour settings, from somebody who works on the annotation language server. The premise is the interesting part: CAP's annotation syntax is looser than ABAP CDS or EDMX — a record can be written with or without an explicit type — so the completion has to guess how verbose you want it, and this is where you tell it. Then filtering the completion list, reading the icons, ordering diagnostics by severity, and turning i18n problems on only when you want them.maryana_naboka, published 2021-10-25
GeneratorsSAP and community
Building an SAP BTP Agent Architecture from Scratch: Python + CAP + HANABuilding an SAP BTP Agent Architecture from Scratch: Python + CAP + HANAA first-person build log of a Flask orchestrator on Cloud Foundry that reduces a question to keywords, searches a Node.js service's Documents entity, and passes what it finds to Claude for a grounded answer. Getting there means learning that HANA's fuzzy .search() matches one word but not a full sentence, fixed by splitting the query into terms and merging the per-term hits, and that provisioning SAP HANA Cloud hits a database-level free-tier quota rather than an HDI-container one, with a stopped instance needing to be resumed first. It also covers @sap/cds-dk needing to sit in dependencies rather than devDependencies, since Cloud Foundry's buildpack skips the latter, before cds deploy --to hana can run as part of the push.neilaspin, published 2026-07-28
CAP Initializr: Generate SAP CAP Projects in SecondsCAP Initializr: Generate SAP CAP Projects in SecondsA hosted project generator for CAP in the shape of Spring Initializr — pick the structure, dependencies and configuration in a browser and download the result, rather than running cds init and then wiring the facets by hand. The post is an MVP announcement asking for feedback, and the tool lives at a Cloud Foundry trial URL rather than on npm, so it is a direction being tested in public rather than something to depend on.Saptarshi017, published 2026-03-23
First Java Cap ApplicationFirst Java Cap ApplicationA step-by-step walkthrough of a first CAP Java project: com.sap.cds:cds-services-archetype scaffolds the initial Maven project, and the domain model is then rewritten in the db folder with entities, the cuid and managed aspects, associations, compositions and a CodeList, so a hand-coded event handler serving a single entity gives way to a service that CAP's generic persistence handling serves without custom code. It deploys that model to SQLite for local development — cds deploy --to sqlite, then a Spring profile pointing at the generated database file — and ends by adding an index.cds so the model and service can be published as a reusable npm module.bruce_wang3, published 2020-12-08
Give Your AI Agent Some Tools: Introducing the UI5 MCP ServerGive Your AI Agent Some Tools: Introducing the UI5 MCP ServerAnnounces @ui5/mcp-server, SAP's open-source MCP server for UI5 development, and walks through its initial six tools. get_project_info, get_api_reference and run_ui5_linter (which applies UI5 linter fixes) read the project's own version, manifest and code rather than an LLM's training data, which is what agent access to your code explains. create_ui5_app scaffolds a new JavaScript or TypeScript project, standalone or inside an existing CAP application, from templates with pre-configured OData model setups, which is generators.published 2025-09-03
Joule Studioがリリースされたので早速CAPアプリを自然言語で操作するカスタムスキルを構築してみたJoule Studioがリリースされたので早速CAPアプリを自然言語で操作するカスタムスキルを構築してみたA walkthrough of building a custom Joule Studio skill on a CAP bookshop app: cds add sample and cds add mta scaffold the project and its deployment descriptor, cds compile srv/ --to xsuaa generates the role template behind the @requires: 'admin' check on AdminService from the SAP Authorization and Trust Management service (XSUAA), and mbt build packages the app for deployment to the SAP BTP, Cloud Foundry Runtime. The skill reaches the deployed OData API through the SAP Destination service, configured with the OAuth2 Client Credentials grant using the client ID, secret and token endpoint from the app's XSUAA service key, so Joule answers a natural-language question about a book by its ID.takayuki_tanaka, published 2025-07-30
Prompt-Driven Development: Building Full-Stack SAP CAP Apps from User StoriesPrompt-Driven Development: Building Full-Stack SAP CAP Apps from User StoriesA user story in, a scaffolded full-stack CAP application out, through SAP Build Code and Joule. The question it is actually asking is how much of the foundational code is worth generating, and it answers by generating all of it.AnuradhaDhingan, published 2025-12-11
SAP Cloud Application Programming Model（CAP）：概要およびデモ - Part 1SAP Cloud Application Programming Model（CAP）：概要およびデモ - Part 1Introduces SAP Cloud Application Programming Model as an open, opinionated framework that shoulders OData plumbing and database-specific code so a domain is modelled once in CDS, then builds a small bookshop project to show it: @sap/cds-dk's cds init scaffolds the project, cds watch serves it locally with live reload against an in-memory SQLite database, and a CatalogService projects a CDS domain model seeded from CSV files. The result is read as an OData service in the browser and exercised further through a Postman collection, with the optional @sap/vscode-cds extension noted for CDS syntax highlighting and completion in VS Code.rasai, published 2020-12-31
SAP Fiori Application Generator Available in Open SourceSAP Fiori Application Generator Available in Open SourceThe SAP Fiori tools team announces that the code behind @sap/generator-fiori has moved entirely to open source, and names the packages it is built from: writers that output SAP Fiori elements and freestyle SAPUI5 application files, inquirer prompts for picking a back end, and ABAP deploy tasks, coordinated by a sub-generator. Before publishing, the team broke up what had been a monolith, added TypeScript typings and raised test coverage.jlong, published 2025-05-27
UI5 MCP Server Got Extended for UI Integration Cards GenerationUI5 MCP Server Got Extended for UI Integration Cards GenerationVersion 0.2.1 of the UI5 MCP Server adds three tools for UI Integration Cards: get_integration_cards_guidelines feeds an agent current best practices and API versions, create_integration_card scaffolds a new card project, and run_manifest_validation checks the generated manifest against the schema. The post frames these as closing the same gaps as the server's existing tools — an LLM's outdated or wrong card API knowledge — this time for scaffolding and validating a card rather than a full app.daniel_vladinov, published 2026-01-22
Useful CAP CDS and Fiori Commands to Accelerate Development and DeploymentUseful CAP CDS and Fiori Commands to Accelerate Development and DeploymentA command-by-command walkthrough of @sap/cds-dk's cds add and fiori add generators: cds add xsuaa writes an XSUAA security configuration from the CDS model's authorization annotations, and cds add hana together with cds deploy --to hana switches persistence from the default SQLite database to SAP HANA Cloud. cds add mta and fiori add deploy-config, from @sap/generator-fiori, build the Cloud Foundry deployment descriptor together, adding a destination-service block and an xs-app.json that routes the Fiori app's calls through a named destination.TiaXu, published 2022-10-19
LintingCommunity only
Introducing eslint-plugin-better-cap-config an ESLint plugin to improve CAP configurationIntroducing eslint-plugin-better-cap-config an ESLint plugin to improve CAP configurationThe author's own announcement, and precise about scope: today it catches deprecated key/value entries in CAP's JSON configuration, and the ambition is that it grows into best practices, suggestions and autofixes the way any ESLint plugin does. The implementation detail worth knowing is that it uses modern ESLint's JSON language support rather than a generic parser, which is what makes linting a configuration file rather than source code work at all.published 2025-09-08
Local developmentSAP and community
A Fiori Launchpad Sandbox for all your CAP-based projects - OverviewA Fiori Launchpad Sandbox for all your CAP-based projects - OverviewWhere cds-launchpad-plugin came from, told as a learning exercise: the author wanted a real problem to teach himself TypeScript on, and picked the thing he kept redoing in every CAP project — a launchpad to see all the UI applications in one place. The origin post for an entry whose 2023 update is also indexed here.published 2022-03-14
A Fiori Launchpad Sandbox for all your CAP-based projects – Sample project setupA Fiori Launchpad Sandbox for all your CAP-based projects – Sample project setupThe hands-on half published the same day as the overview: the launchpad module wired into the CAP sample repository, step by step from a global cds-dk install. Same-day pairs like this are worth keeping together — the overview argues, this one is the thing you follow.published 2022-03-14
BTP CAP : How to Connect to Remote Services Locally in CAP ApplicationBTP CAP : How to Connect to Remote Services Locally in CAP ApplicationThe same problem four years earlier: a CAP application that consumes a remote service, running locally against the real thing rather than against a mock.showkath_naseem, published 2022-12-12
CAP for nodejs安全的暴露接口练习CAP for nodejs安全的暴露接口练习Starting from the risk-management sample, the walkthrough adds an open ExternalAPI service beside the existing RiskService, then moves every security annotation into a separate service-auth.cds file: @requires: authenticated-user on one entity, role-scoped @restrict grants for RiskViewer and RiskManager on another. It tests the unprotected action locally with cds watch, calling it from Postman with the session cookie read out of SAP Business Application Studio's preview tab. It then deploys to BTP and reads Risks with a client-credentials OAuth token fetched from a service key of the cpapp-auth instance, after changing that entity's READ grant from RiskViewer to authenticated-user, which the post, citing capire's CDS-based Authorization page, describes as a grant for a technical user integrating systems rather than for access from a front end.ArthurYang, published 2024-12-10
CAP with Local App Previews – Tips for Smooth DevelopmentCAP with Local App Previews – Tips for Smooth DevelopmentUI5's virtual endpoints remove the sandbox files a local preview used to need, and this is what that means for a CAP project specifically. Tips from trying it rather than an announcement of it.MioYasutake, published 2025-08-16
cds-launchpad-plugin supercharged & ready for the future - CAP Plugin, UI5 Tooling support & Async Launchpadcds-launchpad-plugin supercharged & ready for the future - CAP Plugin, UI5 Tooling support & Async LaunchpadThe maintainer on a set of changes rather than on the plugin's original purpose, which is indexing every SAPUI5 project in a workspace into one sandbox launchpad so all of them can be tested together. What moved: it became a CAP plugin, gained UI5 Tooling support, and moved to the async launchpad — each framed as keeping pace with where SAPUI5 itself is going rather than as a feature.published 2023-12-11
Create a Simple CAP Application and Explore the DefaultsCreate a Simple CAP Application and Explore the DefaultsThe shortest way in: a project from the wizard, then a look at what CAP assumed on your behalf. The defaults are the subject rather than the application — which is the right first lesson in a framework whose whole argument is convention over configuration.SAP
Develop CAP Project with Lazyvim in DockerDevelop CAP Project with Lazyvim in DockerA Docker image running Lazyvim with language server support for CDS, TypeScript and JSON, so a CAP project can be developed with an editing experience comparable to VS Code without leaving the keyboard. Narrow by intent, and the useful general point underneath it is that CAP's editor support reaches anything that speaks LSP.published 2024-03-28
Establishing connectivity between a local CAP runtime and on-premise systemsEstablishing connectivity between a local CAP runtime and on-premise systemsReaching S/4HANA, an on-premise HANA or any HTTP service from a CAP process running on your laptop — the case where the connectivity proxy the platform provides is not there and the tunnel has to be arranged.vLeonkev, published 2025-10-15
Get an introduction to the cds REPLGet an introduction to the cds REPLcds repl as a way to ask the running model questions directly, which is the fastest route from a suspicion about a query to knowing.SAP
How to Call a Remote OData API from Your Local CAP Java ProjectHow to Call a Remote OData API from Your Local CAP Java ProjectThe Business Accelerator Hub sandbox called from a CAP Java project on a laptop, with a concrete finish line — a localhost URL that returns business partners. Everything needed to get there is listed, Maven and JDK versions included.Umezuki, published 2025-08-11
How to fix npm error notarget @sap/hdi-deploy when you create a CAP app in BASHow to fix npm error notarget @sap/hdi-deploy when you create a CAP app in BASA specific npm failure when creating a CAP app from a template, and the post now opens with its own July 2025 update saying the version has been published so this instance is gone. It stays useful because the cause — a dependency pointing at a version nobody published yet — recurs, and the unblocking steps are general.Ryota_Ito, published 2025-07-28
Remote Debugging of SAP CAPM App - NodejsRemote Debugging of SAP CAPM App - NodejsDebugging a CAP Node.js application that is not on your machine, built up from cds init and a custom action so there is something to breakpoint. The part people need is at the end; the beginning is there so the end is reproducible.darshanv23, published 2025-06-05
Running CAP Node Applications in SAP Business Application StudioRunning CAP Node Applications in SAP Business Application StudioThe Run Configurations tool, which is where binding and mocking live in BAS rather than in a terminal. Three things it does: several named configurations per application in a tree, dependencies bound to real service instances, and OData dependencies mocked. The author notes the configurations are standard launch entries underneath, which is the detail that lets you leave the tool behind if you want to.liat_b, published 2020-10-22
SAP CAP Lessons Learned: SQLite is single threaded, HANA is notSAP CAP Lessons Learned: SQLite is single threaded, HANA is notA page long, and one of the more useful pages here: the local database serialises what the deployed one runs in parallel, so concurrency bugs are invisible until they are not. Filed by the author as something the tutorials do not make clear.LucasMagriniRigo, published 2025-01-22
SAP Cloud Application Programming Model（CAP）：概要およびデモ - Part 1SAP Cloud Application Programming Model（CAP）：概要およびデモ - Part 1Introduces SAP Cloud Application Programming Model as an open, opinionated framework that shoulders OData plumbing and database-specific code so a domain is modelled once in CDS, then builds a small bookshop project to show it: @sap/cds-dk's cds init scaffolds the project, cds watch serves it locally with live reload against an in-memory SQLite database, and a CatalogService projects a CDS domain model seeded from CSV files. The result is read as an OData service in the browser and exercised further through a Postman collection, with the optional @sap/vscode-cds extension noted for CDS syntax highlighting and completion in VS Code.rasai, published 2020-12-31
Set up a self-contained development environment for CAP Node.jsSet up a self-contained development environment for CAP Node.jsA CAP development environment that carries its own dependencies, so the machine it runs on stops being part of the setup.SAP
Surviving and Thriving with the SAP Cloud Application Programming Model: Local development hurdlesSurviving and Thriving with the SAP Cloud Application Programming Model: Local development hurdlesThree hurdles in running a CAP application locally: services mocked with cds run --with-mocks return no data across OData associations until the ON clause is hand-written into the imported CDS, an on-premise API reached through the SAP Cloud Connector times out because its proxy is part of destinations and connectivity and reachable only from inside SAP BTP, and a Fiori frontend served from the HTML5 Application Repository needs the HTML5 Repo Mock to reach a local backend at all. It closes with the launch configurations the author uses for debugging cds watch locally and attaching to a running Cloud Foundry instance.maxstreifeneder, published 2023-02-02
Plugin authoringSAP only
BTP CAP : Custom plugin to separate generic change log capture logicBTP CAP : Custom plugin to separate generic change log capture logicWalks through building a custom [CAP](ecosystem:cap) plugin that centralises change-log capture: on cds.once('served') it collects entities annotated @audit, then hooks srv.before('UPDATE') to read the existing record, diff it field by field against the incoming payload, and record old/new values with the user and timestamp. It also documents a cds build failure packaging the plugin's own directory into gen/srv for MTA deployment, fixed by adding it as a copyfiles build-parameter step in mta.yaml.sreehari_vpillai, published 2023-05-10
Create your first CAP pluginCreate your first CAP pluginA step-by-step guide to the cds-plugin.js extension point: scaffold a package, add an index.cds for shared model artifacts, and test it locally against a throwaway CAP project before publishing to npm, with a separate section on building the same plugin in TypeScript and compiling it with tsc. Points to the author's own cds-plugin-handlers and ui5-cap-serverside-rendering-plugin as worked examples.published 2024-12-09
How to build reusable plugin components for CAP Java applicationsHow to build reusable plugin components for CAP Java applicationsA companion to Daniel Schlachter's Reusable components for CAP with cds-plugin, showing the same mechanism on CAP Java: a plugin ships as its own Maven artifact with an event handler and a CdsRuntimeConfiguration implementation, registered through the JDK's ServiceLoader rather than any CAP-specific wiring. The walkthrough builds a cds-emoji-plugin-java jar that decorates @emoji-annotated fields on read, installs it to the local Maven repository, and adds it as a runtime dependency to a cds init --add java bookshop application. It argues the plugin mechanism was not new to CAP Java, just previously undocumented.robinjayasinghe, published 2023-05-16
Reusable components for CAP with cds-pluginReusable components for CAP with cds-pluginThe post that taught the mechanism, and it teaches it by picking a requirement small enough to be absurd: every string a service returns should end in a random emoji. Working through that on the bookshop example leaves nothing to argue about except the plumbing, which is the point — what a cds-plugin is, where it hooks in, and why packaging it beats copying it into the next project. Vinícius Barrionuevo credits this post as the thing that gave him the idea for sap-cap-sdm-plugin, and it is hard to read the plugin ecosystem in this graph without it.published 2023-04-30
SAP AI Services - DOX - Gen AI with SAP CAP Plugin - Part 3SAP AI Services - DOX - Gen AI with SAP CAP Plugin - Part 3Building on Reusable components for CAP with cds-plugin by Daniel Schlachter, this part walks through a custom CAP plugin — a cds-plugin.js plus a lib_cap_dox.js helper — that authenticates against SAP's Document Information Extraction (DOX) service and calls its schema and job-status APIs to fill an entity from extracted document fields. It covers reading the service key from Cloud Foundry (cf service-key) for the OAuth token endpoint, and dynamically mapping DOX's header and line-item output onto CAP entity properties.sabarna17, published 2024-06-11
Seed dataSAP and community
Add useful Extensions to Dev spaces in SAP Business Application StudioAdd useful Extensions to Dev spaces in SAP Business Application StudioStarts from the point capire makes — that CAP is editor-agnostic and BAS is the preconfigured option — and then does the thing that undoes preconfiguration: adds two extensions to a dev space for initialising data in a CAP application, with the uninstall procedure as well as the install. The uninstall half is what makes it worth keeping.showkath_naseem, published 2022-11-13
Avoiding Data Loss When Loading Initial Data with CSV Files in CAPAvoiding Data Loss When Loading Initial Data with CSV Files in CAPcds add tiny-sample gives you a CSV in db/data and it loads on deploy, which looks like a way to seed a productive application. The catch, stated plainly: change the CSV or the schema and HANA is reinitialised from the file, taking whatever users had entered with it.MioYasutake, published 2025-09-15
CAP: Consume External Service - Part 1CAP: Consume External Service - Part 1Builds a CAP Node.js service from scratch that consumes the public NorthWind OData V4 service: cds import turns its EDMX metadata into a CSN model under srv/external, and a CatalogService projects Products from it with a custom READ handler that runs the request through cds.connect.to('NorthWind'). Shows the same projection working two ways — against a CSV mocked under srv/external/data with the <service>-<entity>.csv naming the framework expects, then against the real service once credentials.url is added to the CAP configuration and @sap-cloud-sdk/http-client is installed — and defers routing that connection through the Cloud Foundry Destinations service to the next post in the series.published 2020-05-26
Handling CSV Data Deployment in CAP HDI Without Data LossHandling CSV Data Deployment in CAP HDI Without Data LossThe same trap from the HDI side: .hdbtabledata hands the container full ownership of the data, so the next deployment overwrites the table from the file. Two independent posts three months apart on the same sharp edge, which is a fair signal about how sharp it is.Sekar_Somasundaram, published 2025-06-04
TestingSAP and community
A Fiori Launchpad Sandbox for all your CAP-based projects - OverviewA Fiori Launchpad Sandbox for all your CAP-based projects - OverviewWhere cds-launchpad-plugin came from, told as a learning exercise: the author wanted a real problem to teach himself TypeScript on, and picked the thing he kept redoing in every CAP project — a launchpad to see all the UI applications in one place. The origin post for an entry whose 2023 update is also indexed here.published 2022-03-14
A Fiori Launchpad Sandbox for all your CAP-based projects – Sample project setupA Fiori Launchpad Sandbox for all your CAP-based projects – Sample project setupThe hands-on half published the same day as the overview: the launchpad module wired into the CAP sample repository, step by step from a global cds-dk install. Same-day pairs like this are worth keeping together — the overview argues, this one is the thing you follow.published 2022-03-14
CAP full-stack testing with BDD flavourCAP full-stack testing with BDD flavourIntroduces Behavior-Driven Development for CAP applications: specifications written in Gherkin against a running app, validated by Cucumber, using cds-cucumber's ready-made step definitions for SAP Fiori elements and OData screens. The library handles service lifecycle — starting the app, assigning a port, driving the browser and authenticating a named user — and its OData steps know the service's entities and fields from the CDS model itself, so a scenario can open a list report, search it and assert row counts without hand-written glue code.published 2023-10-10
cds-launchpad-plugin supercharged & ready for the future - CAP Plugin, UI5 Tooling support & Async Launchpadcds-launchpad-plugin supercharged & ready for the future - CAP Plugin, UI5 Tooling support & Async LaunchpadThe maintainer on a set of changes rather than on the plugin's original purpose, which is indexing every SAPUI5 project in a workspace into one sandbox launchpad so all of them can be tested together. What moved: it became a CAP plugin, gained UI5 Tooling support, and moved to the async launchpad — each framed as keeping pace with where SAPUI5 itself is going rather than as a feature.published 2023-12-11
Create Automated System Tests for SAP Cloud Application Programming Model ProjectsCreate Automated System Tests for SAP Cloud Application Programming Model ProjectsEnd-to-end tests driving the UI with wdi5, run in the pipeline — the layer above cds.test, which stops at the service boundary.SAP
Enhancing Unit Testing in SAP CAP Java Applications with GitHub CopilotEnhancing Unit Testing in SAP CAP Java Applications with GitHub CopilotBuilt on SAP's own CAP Java unit-testing guide, and the question is narrow: how much of that does an assistant actually write for you. The author's own getting-started post is the one to read first.Anjali_Pathak, published 2025-09-04
How to Restrict CRUD Operations in SAP CAPM Using @Capabilities, @readonly and Test APIs with .httpHow to Restrict CRUD Operations in SAP CAPM Using @Capabilities, @readonly and Test APIs with .httpEntities are exposed with full CRUD by default, and this is how to take operations away again — @Capabilities for Insert, Update and Delete individually, @readonly for the blunt version. Tested with .http files rather than a UI, which keeps the check on the service.DeepaRagho, published 2026-05-22
TypeScript patternsCommunity only
Create your first CAP pluginCreate your first CAP pluginA step-by-step guide to the cds-plugin.js extension point: scaffold a package, add an index.cds for shared model artifacts, and test it locally against a throwaway CAP project before publishing to npm, with a separate section on building the same plugin in TypeScript and compiling it with tsc. Points to the author's own cds-plugin-handlers and ui5-cap-serverside-rendering-plugin as worked examples.published 2024-12-09
How to use Cloud SDK for AI in an existing CAP NodeJS Project in CommonJSHow to use Cloud SDK for AI in an existing CAP NodeJS Project in CommonJSA dependency that is ESM-only inside a project that is CommonJS, and the author's judgement that converting the project was too risky. What follows is the esbuild workaround, which is the honest answer when the ecosystem has moved and your codebase has not.Jacky_Liu1, published 2025-08-01
How we could potentially have nestjs as runtime for SAP CAPHow we could potentially have nestjs as runtime for SAP CAPA proof-of-concept that swaps @sap/cds's ApplicationService and ODataAdapter dispatch for NestJS controllers, providers and interceptors, built by the author to learn NestJS rather than to ship a runtime. It works through CAP's run-dispatch-handle loop and AsyncLocalStorage-based transaction boundaries in detail before mapping them onto NestJS dependency injection and interceptors — one community answer to the controller-service-repository layering question core TypeScript support leaves open. The author's own conclusion is that the result reimplements CAP Java in Node.js, and they do not plan to take it further.alex_myakinkii, published 2024-09-19
Quick Implementation of DI/DI Container on SAP CAP: Node.js Hands-on PartQuick Implementation of DI/DI Container on SAP CAP: Node.js Hands-on PartThe hands-on half of a pair — the theory is in the author's earlier post — built on the official bookshop sample with the directories flattened so the pattern is visible rather than the scaffolding. Assumes CAP and TypeScript already.Umezuki, published 2025-05-02
Use TypeScript with the SAP Cloud Application Programming ModelUse TypeScript with the SAP Cloud Application Programming ModelWritten from the position of someone who avoided JavaScript for years and then had to cover CAP, which gives it a useful angle: what TypeScript buys a person arriving from a typed language, and where to start rather than how to finish. Ends on a worked example rather than a survey.KevinR, published 2024-06-24
TypingSAP and community
TypeScript Sheriff: How can I use TypeScript in the SAP ecosystem? (Part 2 of 3)TypeScript Sheriff: How can I use TypeScript in the SAP ecosystem? (Part 2 of 3)The middle part of three, and the one about SAP: where TypeScript is supported across a side-by-side extension on BTP, as of July 2023. It says the SAP Cloud SDK already generates OData clients as .ts files and UI5 ships types for its controls and modules, the ground of TypeScript support in UI5, while CAP offers standard types and the new @cap-js/cds-typer generates types for a service, which is typing, with the caveat that running cds-ts commands could overwrite what cds-typer generated.MikeDoyle, published 2023-07-05