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SAP CAP(Cloud Application Programming)开发框架概述SAP CAP(Cloud Application Programming)开发框架概述A Chinese-language walkthrough of CAP built mainly from CAPire's own "About CAP" page: CDS entities, associations, compositions and aspects for data modelling, with an extend Books with @restrict: [{ grant:'WRITE', to:'admin' }] aspect as its authorization example; CQL and CQN queries shown against both a local service and OData's $select/$expand; and the service-and-event model — this.on, this.emit, srv.on — that carries CAP's async processing. It closes with the author's own setup: installing @sap/cds-dk, scaffolding a bookshop project with cds init, and running it with cds watch against local SQLite, mocked authentication and file-based messaging standing in for HANA Cloud, IAS and Kafka.ArthurYang, published 2024-01-07
SAP Job Scheduling Service + Cloud Application Programming Model application (CAP) + SAP Authorization and Trust Management Service (XSUAA)SAP Job Scheduling Service + Cloud Application Programming Model application (CAP) + SAP Authorization and Trust Management Service (XSUAA)Calling an unsecured endpoint on a schedule is trivial; this is the same thing once the endpoint is protected. The interesting part is the caller — the Job Scheduling Service is not a person, so CAP's pseudo-roles are where the post spends its time, and $XSSERVICENAME has to match the scheduler's own instance name.former_member412792, published 2022-12-12
Architecting Complex Real Life Business Scenario on SAP BTP with ease [ Targeting Multiple backend S/4HANA Systems utilizing Principal Propagation ]Architecting Complex Real Life Business Scenario on SAP BTP with ease [ Targeting Multiple backend S/4HANA Systems utilizing Principal Propagation ]The opening of a three-part series on reaching more than one S/4HANA system from one CAP application with the user's identity carried through. This part sets up the business problem; the propagation itself is in the parts that follow.mohit_bansal3, published 2022-11-25
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
Develop and deploy a HTML (Angular/Vue/React) app on SAP BTP access S/4 OP, Part IIIDevelop and deploy a HTML (Angular/Vue/React) app on SAP BTP access S/4 OP, Part IIIThird part of a series on an Angular front end over CAP against an on-premise S/4HANA system: after an OData V4 service is exposed from S/4 OP, a CAP (Node.js) project imports its metadata with cds import, wires it as an external service with cds.connect.to, and resolves the on-premise tenant through a named destination set under the service's cds configuration in package.json. The HTML app itself is built as shown in an earlier part of the series and is only referenced here.Hongjun_Qian, published 2024-03-11
Execute [OAuth2 client credentials] protected REST request with SAP CAP ApplicationExecute [OAuth2 client credentials] protected REST request with SAP CAP ApplicationA recipe, and the author calls it that — package.json, a .cds and a handler — for calling a remote service protected by OAuth2 client credentials from a CAP application. Short, complete, and addressed to CAP developers rather than to BTP administrators.Lachmish, published 2022-04-27
Execute [OAuth2 client credentials] protected REST request with SAP CAP Application
Authentication changed in CAP Java 3.0.1, 2024-07-26. Affects A recipe.
Extend SAP SuccessFactors on SAP BTP with CAP - Import SAP SuccessFactors OData Services definitionsExtend SAP SuccessFactors on SAP BTP with CAP - Import SAP SuccessFactors OData Services definitionsWalks through importing the ECEmployeeProfile and PLTUserManagement OData services from SAP API Business Hub into a CAP project: downloading their EDMX files, running cds import in SAP Business Application Studio to generate the CSN under srv/external, and pointing the resulting cds.requires entries at a destination. The second half creates a destination and an XSUAA service instance on BTP and binds their service keys into a default-env.json file so the project can reach SAP SuccessFactors during local development.published 2022-03-21
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
Invoke OpenAPI-documented APIs remotely with SAP Cloud Application Programming ModelInvoke OpenAPI-documented APIs remotely with SAP Cloud Application Programming ModelThe other direction: consuming an API described by an OpenAPI document from CAP, rather than publishing one. Worth pairing with the plugin entries here, which all serve the outbound half.wittro, published 2022-08-30
Invoke OpenAPI-documented APIs remotely with SAP Cloud Application Programming Model
Destinations changed in @sap-cloud-sdk/connectivity 4.0.0, 2025-03-04. Affects Runnable code.
Microsoft Sentinel for SAP goes agentlessMicrosoft Sentinel for SAP goes agentlessExplains how Microsoft Sentinel for SAP's new agentless data connector drops its Docker-based collector agent by reusing an existing SAP Cloud Connector setup together with SAP Integration Suite: on SAP NetWeaver 750 and later, a small set of RFC function modules must be reachable from Integration Suite, added as an RFC connection in the subaccount's Destinations maintenance view, with a user authorised to call them (RFC connectivity). It also covers calling the audit log API remotely, which on older releases needs SAP note 3054326 and a different integration-package configuration.published 2024-12-17
Part 3: Architecting Complex Real Life Business Scenario on SAP BTP with ease [ Targeting Multiple backend S/4HANA Systems utilizing Principal Propagation ]Part 3: Architecting Complex Real Life Business Scenario on SAP BTP with ease [ Targeting Multiple backend S/4HANA Systems utilizing Principal Propagation ]The final part, and the one with the most CAP in it — the service consuming the propagated destinations, and what the handler sees. Read the three together; the series is one piece.mohit_bansal3, published 2022-11-25
Part 3: Architecting Complex Real Life Business Scenario on SAP BTP with ease [ Targeting Multiple backend S/4HANA Systems utilizing Principal Propagation ]
Destinations changed in @sap-cloud-sdk/connectivity 4.0.0, 2025-03-04. Affects A recipe.
Part2: Architecting Complex Real Life Business Scenario on SAP BTP with ease [ Targeting Multiple backend S/4HANA Systems utilizing Principal Propagation ]Part2: Architecting Complex Real Life Business Scenario on SAP BTP with ease [ Targeting Multiple backend S/4HANA Systems utilizing Principal Propagation ]The middle part: the destinations and the trust that make principal propagation work against several backends rather than one, which is where the configuration stops being a copy of the tutorial.mohit_bansal3, published 2022-11-25
Qualtrics integration with domain based authorization in CAP project on HANA cloudQualtrics integration with domain based authorization in CAP project on HANA cloudSurveys pulled from Qualtrics into a CAP application in real time, with the twist in the title: authorisation decided by the user's domain rather than by a role collection. A pattern that comes up whenever the audience is wider than the tenant.former_member69893, published 2022-09-30
Qualtrics integration with domain based authorization in CAP project on HANA cloud
Authorization has changed twice since this was published, most recently in CAP Java 3.7.1, 2025-01-30. Affects Runnable code.
SFSFとHANA Cloudを使用するCAPのアプリケーション開発SFSFとHANA Cloudを使用するCAPのアプリケーション開発In Japanese. A hands-on taking data between SuccessFactors and HANA Cloud through a CAP application — the connection setup, the data and service models, then read and write logic, and a Cloud Foundry deploy. Long enough to carry its own table of contents.rasai, published 2022-12-14
SFSFとHANA Cloudを使用するCAPのアプリケーション開発
Database connectors has changed twice since this was published, most recently in @sap/cds 10.1.0, 2026-09-07. Affects A recipe, Runnable code.
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
Generating PDF on BTP CF using CAP and PuppeteerGenerating PDF on BTP CF using CAP and PuppeteerA headless browser rendering the PDF, which is the answer people reach for when the document is really a web page. The Cloud Foundry part is the difficulty: Puppeteer needs a browser in the buildpack, and that is what the post is actually about.ltomazeli58, published 2024-03-28
How to Generate and Download PDFs on the fly without persisting in CAP ApplicationHow to Generate and Download PDFs on the fly without persisting in CAP ApplicationStreaming a generated document straight to the client without writing it anywhere first — which sidesteps the retention question a stored file creates, and is the distinction worth having beside the attachments capability.HarsithKumarReddy, published 2024-06-18
[Blog Post] SAP Event Mesh – CAP based implementation of SAP Event Mesh in a Single-Tenant Scenario[Blog Post] SAP Event Mesh – CAP based implementation of SAP Event Mesh in a Single-Tenant ScenarioThe instalment of the Deep Dive series where the framework arrives. The earlier posts consumed Event Mesh over its REST API, so this one is explicitly a comparison: the same thing through CAP's messaging abstraction, with the three flavours — local, file-based and a real broker — named before the broker one is built.AyushKumar and vipul.khullar, published 2022-06-06
[Blog Post] SAP Event Mesh – CAP based implementation of SAP Event Mesh in a Single-Tenant Scenario
Event Mesh changed in @sap/cds 10.0.3, 2026-07-02. Affects A recipe, Runnable code.
A Natural Choice: SAP AIF can now expose events to Advanced Event Mesh to power your EDAA Natural Choice: SAP AIF can now expose events to Advanced Event Mesh to power your EDAAnnounces AIFAEM, a new software component of SAP Application Interface Framework that lets SAP ECC and older SAP S/4HANA backends create custom events from BOR objects and IDocs, in CloudEvents format, and publish them to SAP Integration Suite, advanced event mesh — closing the gap for backends that predate S/4HANA's own RAP-based standard events. It ships as the ABAP add-on AIFAEM731 (SAP NetWeaver 7.31, i.e. ECC) or AIFAEM800 (NetWeaver 7.55 and later), and its usage is included in an advanced event mesh subscription.KStrothmann, published 2024-07-29
Event Driven Architecture with Event Mesh - Part-1Event Driven Architecture with Event Mesh - Part-1Continues the author's own CDS entity-relationship example rather than starting a fresh one, which is the point of it — the same model gains events. Concepts first, then a message client and queue on BTP, then a Postman check that the queue works before any CAP code is written, and finally the emit from a CAP REST service.Avinash_Vaidya, published 2022-12-04
Event Driven Architecture with Event Mesh - Part-1
Event Mesh changed in @sap/cds 10.0.3, 2026-07-02. Affects A recipe, Runnable code.
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
Integrating SAP S/4HANA Invoicing with KSeF Using SAP Event Mesh and CAPIntegrating SAP S/4HANA Invoicing with KSeF Using SAP Event Mesh and CAPA concrete regulatory deadline rather than a demo topic: every Polish invoice has to pass through KSeF, the national e-invoice platform, and this proposes the route — S/4HANA business events onto Event Mesh, a CAP application consuming them and talking to KSeF. Short, and offered as an example to argue with.Yahor, published 2024-08-29
SAP Advanced Event Mesh – Manage Advance Event Mesh with API’sSAP Advanced Event Mesh – Manage Advance Event Mesh with API’sMaps the API surface of SAP Advanced Event Mesh: the REST API(v2) for administering the cloud environment and its event broker services (with legacy v0/v1 noted as discouraged), SEMP(v2) for provisioning and operating a single event broker, and the open protocols and standards it supports for consuming events, among them JMS, OpenMAMA, REST, AMQP 1.0, MQTT and WebSocket. Covers how each API authenticates — bearer tokens with scoped permissions for REST API(v2), username/password or OAuth2/certificate-based for SEMP(v2) — and where to find the connection details and reference documentation for each.Nils_Lorenz, published 2024-08-28
Triggering SAP Build Process Automation Processes from SAP Cloud Application Programming (CAP) AppsTriggering SAP Build Process Automation Processes from SAP Cloud Application Programming (CAP) AppsThe two routes out of a CAP application into a process, side by side: a destination with OAuth2ClientCredentials, the same destination with principal propagation, and Event Mesh with a CloudEvents payload. Written before @cap-js/process existed, so it is the record of what the plugin now does for you — useful when the plugin does not fit, and useful for reading what it is actually doing underneath.ATheobaldt, published 2024-12-09
Triggering SAP Build Process Automation Processes from SAP Cloud Application Programming (CAP) Apps
Workflow integration has changed twice since this was published, most recently in @cap-js/n8n 0.0.1, 2026-08-27. Affects A recipe, Runnable code.
Application to Application IntegrationApplication to Application IntegrationSAP's reference architecture for application-to-application integration, where messages carrying transactional data such as sales orders pass between business applications in near real time and each one triggers the next process step. When the sender's and receiver's APIs do not match, Cloud Integration in SAP Integration Suite sits between them to determine receivers, filter, map structures and convert protocols, which is the ground of integration flows; SAP Connectivity service, Cloud Connector and SAP Destination service reach on-premise receivers, and the edge integration cell runtime keeps processing inside a customer-managed landscape where compliance requires it. Direct exchange without middleware is allowed when the two APIs already align, asynchronous communication is the default the page states, and it is drawn at the level of the pattern, following SAP's Integration Solution Advisory Methodology, without designing any one flow.published 2024-08-01
Business to Business IntegrationBusiness to Business IntegrationSAP's reference architecture for business-to-business integration, the exchange of business documents with customers, suppliers and other trading partners over agreed standards such as EDIFACT, ANSI X.12 and IDoc and protocols such as AS2. Its design-time steps are Cloud Integration in SAP Integration Suite, the predefined content of SAP Business Accelerator Hub, and Integration Advisor, which defines message implementation and mapping guidelines and generates runtime artifacts from them; Trading Partner Management then turns partner profiles into agreements pushed to the Partner Directory, and generic integration flows on Cloud Integration read those agreements at runtime to exchange messages with each partner. The alternatives it names are API-based exchange where an industry has standardised its APIs, and SAP Business Network with the managed gateway for spend management in place of connecting partners one by one.published 2024-08-01
Connect Business Processes with SAP Master Data IntegrationConnect Business Processes with SAP Master Data IntegrationSAP's reference architecture for keeping master data such as materials, business partners and cost centres consistent across applications with SAP Master Data Integration, a central hub that stores every change in an event log and distributes it to the solutions that consume it. Cloud Integration in SAP Integration Suite carries what the hub does not reach, SAP solutions it does not yet support and third-party or on-premise systems, through an SAP Master Data Integration adapter, which is where the design meets integration flows; newer SAP S/4HANA releases connect to the hub without it. Consolidation, data quality and central governance are outside the architecture and left to SAP Master Data Governance, and SAP Master Data Integration itself has no entry in the atlas yet.published 2024-08-01
Integrating SAP CPI with Microsoft SharePoint: Part 2- Creating an API to Upload Files to SharePointIntegrating SAP CPI with Microsoft SharePoint: Part 2- Creating an API to Upload Files to SharePointPart two of a three-part series builds a custom HTTP API in Cloud Integration: an HTTP adapter receives the upload, an exchange property derives a folder path from header values, and the SharePoint receiver adapter writes the file with OAuth2 authorization code authentication. It also covers exposing that flow through API Management and enabling streaming so larger files bypass its default 10 MB payload limit.siddhartha_routh, published 2024-11-05
Resend HTTP messages with configured pause and fixed max iteration followed by error handlingResend HTTP messages with configured pause and fixed max iteration followed by error handlingBuilds a retry pattern for a Cloud Integration HTTP Receiver call by splitting the request-reply step into its own local sub-process, which loops on the response code — up to a fixed five iterations, each after a configured pause — and routes to an exception sub-process that attaches the message processing log through Groovy once the count is exceeded or another error occurs. The design is the author's own alternative to the platform's retry pattern and inbuilt HTTP Receiver Adapter retry option, built for cases where neither applies; SAP Event Mesh and SAP Advanced Event Mesh are named only as the queue-based alternative the author considered and set aside.Aman_V, published 2024-01-03
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
SFTP File Level Checks in SAP BTP Cloud IntegrationSFTP File Level Checks in SAP BTP Cloud IntegrationFor an SFTP flow in Cloud Integration that an external party triggers, the post recommends polling with SFTP Poll-Enrich rather than relying on the Sender SFTP adapter and its built-in scheduler, and because Poll-Enrich polls one file per trigger, the design is a Main flow whose Looping Process Call repeatedly invokes a Local Integration Process that holds the Poll-Enrich step. On top of that design, it adds four router conditions, each checked against SAP_PollEnrichMessageFound, CamelLoopIndex, CamelFileName or CamelFileLength: no file found on the first poll, no more files left mid-loop, more than one file present when exactly one should be processed, and an empty file, each letting the flow terminate or raise an exception instead of failing on an unhandled read.Srishti_Gupta, published 2024-09-16
Receive Notifications from Amazon Simple Notification Service for SAP S/4HANA BTP Extension AppReceive Notifications from Amazon Simple Notification Service for SAP S/4HANA BTP Extension AppEmail notifications from a CAP application through Amazon SNS instead of anything SAP provides — a hyperscaler service used directly from the extension rather than through a BTP intermediary. The argument for it is stated as reach rather than cost: the extension gets the platform's services and the hyperscaler's at the same time.albertoliu1993, published 2022-10-14
SAP: Email Functionality in SAP with a Custom Function ModuleSAP: Email Functionality in SAP with a Custom Function ModuleA custom ABAP function module, ZFM_SEND_EMAIL, sends mail through Business Communication Services' CL_BCS and CL_DOCUMENT_BCS classes, adding TO/CC/BCC recipients and multiple attachments by building the HTML document in application code on top of what CL_BCS delivers, which is how ABAP's notifications capability describes mail going out. The send sits in a TRY structure whose three CATCH blocks for CL_BCS's class-based exceptions are empty, so what reaches the caller is a BAPIRET2 table that BAPI_MESSAGE_GETDETAIL fills on the paths without an exception: no recipients given, sent to all, or not sent. That conversion into a caller-facing message table is what ABAP's error handling capability leaves to the application.Surendra_Karma, published 2024-12-16
Microsoft Sentinel for SAP goes agentlessMicrosoft Sentinel for SAP goes agentlessExplains how Microsoft Sentinel for SAP's new agentless data connector drops its Docker-based collector agent by reusing an existing SAP Cloud Connector setup together with SAP Integration Suite: on SAP NetWeaver 750 and later, a small set of RFC function modules must be reachable from Integration Suite, added as an RFC connection in the subaccount's Destinations maintenance view, with a user authorised to call them (RFC connectivity). It also covers calling the audit log API remotely, which on older releases needs SAP note 3054326 and a different integration-package configuration.published 2024-12-17
Recommendations for Customers on using the Direct Push-Based IntegrationRecommendations for Customers on using the Direct Push-Based IntegrationExplains SAP's direct push-based integration, where two ABAP systems (SAP BTP ABAP environment, SAP S/4HANA Cloud or SAP S/4HANA on-premise) exchange business events by calling each other over RFC connectivity, carried over CPI-C or WebSocket depending on the release, through a sender channel on one side and a matching receiver channel on the other that lists which events it wants. It recommends the mechanism only between systems in the same location or subaccount, without public exposure, and for prototyping event-driven scenarios before moving to Event Mesh or SAP Integration Suite, Advanced Event Mesh at a larger scale.sandra_thimme, published 2024-08-09
WebSocket RFC to Cloud Using SAP Business ConnectorWebSocket RFC to Cloud Using SAP Business ConnectorWalks through wiring RFC connectivity between an on-premise ABAP system and a cloud ABAP system (SAP S/4HANA Cloud or Steampunk) through SAP Business Connector, which tunnels classic RFC over a WebSocket/HTTPS connection past firewalls. Covers the RFC destination of type T on the source system, the Communication User, Communication Scenario and Communication Arrangement needed on the cloud side to allow-list the function modules being called, and the three configuration steps on the Business Connector itself, closing with a list of common connection errors and their fixes.Ulrich_Schmidt1, published 2022-10-17
Why SAP Cloud Identity Matters for SAP Task Center: It’s About Trust and Global User IDWhy SAP Cloud Identity Matters for SAP Task Center: It’s About Trust and Global User IDA step-by-step configuration walkthrough for wiring SAP Cloud Identity Services as the trust and user-correlation layer behind SAP Task Center: establishing Identity Authentication as the sole trusted identity provider for the BTP subaccount, and generating the Global User ID — carried in the token's user_uuid claim rather than the SAML name identifier — that Task Center uses to match logged-in users to their tasks. It also covers syncing that ID between Microsoft Entra ID, the Identity Directory and SAP S/4HANA through Identity Provisioning jobs, and the principal-propagation trust the cloud connector needs to pass it through to an on-premise task provider.ivelinakiryakov, published 2024-11-25
Extend SAP SuccessFactors on SAP BTP with CAP - Create the CAP ServiceExtend SAP SuccessFactors on SAP BTP with CAP - Create the CAP ServiceWalks through writing a service definition in SAP Business Application Studio that projects entities from an existing CDS model: one entity gets @odata.draft.enabled because Fiori Elements only shows CRUD actions on a draft-enabled entity, and a read-only projection of an already-imported SuccessFactors OData entity fails with the generic handlers because the call is delegated to the remote service, so a custom handler is needed. Running cds watch then serves the entities, drafts and $metadata at the declared service path.published 2022-03-23
Extend SAP SuccessFactors on SAP BTP with CAP - Import SAP SuccessFactors OData Services definitionsExtend SAP SuccessFactors on SAP BTP with CAP - Import SAP SuccessFactors OData Services definitionsWalks through importing the ECEmployeeProfile and PLTUserManagement OData services from SAP API Business Hub into a CAP project: downloading their EDMX files, running cds import in SAP Business Application Studio to generate the CSN under srv/external, and pointing the resulting cds.requires entries at a destination. The second half creates a destination and an XSUAA service instance on BTP and binds their service keys into a default-env.json file so the project can reach SAP SuccessFactors during local development.published 2022-03-21
SAP CAP: Consume SAP API Hub Sandbox Data as an external service Part- 1SAP CAP: Consume SAP API Hub Sandbox Data as an external service Part- 1Walks through consuming SAP API Business Hub's Business Partner sandbox API from a CAP Node.js project: @sap/cds-dk's cds import turns the downloaded EDMX into a CSN model and a cds.requires entry, a projection service exposes it, and a custom handler forwards reads to the proxy through @sap/cds's cds.connect.to and bp.run(req.query). Reaching the sandbox needs the API key added as a header on that same credentials block, since the destination service that would carry it is left for a promised part two.DebashishDas, published 2022-03-17
My CAP Projects ToolboxMy CAP Projects ToolboxA working inventory of daily CAP tooling: scaffolding a project with cds init and growing it facet by facet through cds add (TypeScript, seed data, an .http test file, a handler stub), then running it with cds watch and setting a breakpoint in a custom handler from SAP Business Application Studio's JavaScript Debug Terminal. It also walks through an @open entity that accepts properties the model never declared, and reading temporal data defined with CAP's temporal aspect, where a plain read returns only what is valid now and a custom handler is needed to retrieve every time slice.vvdries, published 2024-12-23
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
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
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
SAP CAP: Best VSCode extensions for TypeScript development (UI5 & NodeJS)SAP CAP: Best VSCode extensions for TypeScript development (UI5 & NodeJS)A working editor setup for CAP with TypeScript, listed extension by extension across the Node.js and UI5 halves. The kind of post that ages by attrition rather than by being wrong — the reasoning about what an editor needs to know about a CDS project outlives any particular extension in the list.published 2024-04-29
SAP CAP: Best VSCode extensions for TypeScript development (UI5 & NodeJS)
Editor support changed in @sap/cds-dk 8.8.0, 2025-03-04. Affects Runnable code.
My CAP Projects ToolboxMy CAP Projects ToolboxA working inventory of daily CAP tooling: scaffolding a project with cds init and growing it facet by facet through cds add (TypeScript, seed data, an .http test file, a handler stub), then running it with cds watch and setting a breakpoint in a custom handler from SAP Business Application Studio's JavaScript Debug Terminal. It also walks through an @open entity that accepts properties the model never declared, and reading temporal data defined with CAP's temporal aspect, where a plain read returns only what is valid now and a custom handler is needed to retrieve every time slice.vvdries, published 2024-12-23
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
加速开发和部署的CAP CDS和Fiori一些实用命令加速开发和部署的CAP CDS和Fiori一些实用命令In Chinese. A command reference rather than a walkthrough — cds import, cds compile, cds deploy --to sqlite, cds add hana, cds add xsuaa — grouped by what they are for. The kind of page that is more useful than a tutorial once you already know what you are doing.TiaXu, published 2022-10-21
加速开发和部署的CAP CDS和Fiori一些实用命令
Generators has changed twice since this was published, most recently in @sap/cds-dk 10.0.3, 2026-07-02. Affects A recipe, Runnable code.
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
Avoid design time CAP server restarts when maintaining local data filesAvoid design time CAP server restarts when maintaining local data filescds watch restarting on every file change is the feature; this is the case where it is not. Editing a CSV seed file mid-edit restarts the server against half-finished data, and the post is about suppressing that without giving up the watch loop. A small friction most people work around silently rather than fix.published 2024-04-26
Avoid design time CAP server restarts when maintaining local data files
Local development changed in @sap/cds-dk 7.9.1, 2024-05-02. Affects Runnable code.
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
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
My CAP Projects ToolboxMy CAP Projects ToolboxA working inventory of daily CAP tooling: scaffolding a project with cds init and growing it facet by facet through cds add (TypeScript, seed data, an .http test file, a handler stub), then running it with cds watch and setting a breakpoint in a custom handler from SAP Business Application Studio's JavaScript Debug Terminal. It also walks through an @open entity that accepts properties the model never declared, and reading temporal data defined with CAP's temporal aspect, where a plain read returns only what is valid now and a custom handler is needed to retrieve every time slice.vvdries, published 2024-12-23
XSUAA Local TestingXSUAA Local TestingAdding XSUAA to a CAP project two ways, and then the part that is usually missing: getting the authorisation to behave on a laptop rather than only after deployment. The default authentication mechanism is the easy half; testing it without a landscape is the reason this exists.ManasaManu, published 2024-10-17
XSUAA Local Testing
Authorization has changed twice since this was published, most recently in CAP Java 3.7.1, 2025-01-30. Affects A recipe, Runnable code.
加速开发和部署的CAP CDS和Fiori一些实用命令加速开发和部署的CAP CDS和Fiori一些实用命令In Chinese. A command reference rather than a walkthrough — cds import, cds compile, cds deploy --to sqlite, cds add hana, cds add xsuaa — grouped by what they are for. The kind of page that is more useful than a tutorial once you already know what you are doing.TiaXu, published 2022-10-21
加速开发和部署的CAP CDS和Fiori一些实用命令
Generators has changed twice since this was published, most recently in @sap/cds-dk 10.0.3, 2026-07-02. Affects A recipe, Runnable code.
Diagrams related to OData entities (CAP & ECC)Diagrams related to OData entities (CAP & ECC)Builds a small CAP service that uses the framework's reflection API to read an OData entity's elements and associations and emits PlantUML diagram source for it, as a hand-rolled alternative to the OpenAPI/Yuml-based diagram export capire documents. The author contrasts the PlantUML result with the OpenAPI/Yuml diagram, calling it more detailed and giving more control over orientation, colors and links. Part 1 of a two-part series; part 2 covers the same idea for ECC/ABAP.Pierre_Godart, published 2022-09-06
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
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
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
Avoid design time CAP server restarts when maintaining local data filesAvoid design time CAP server restarts when maintaining local data filescds watch restarting on every file change is the feature; this is the case where it is not. Editing a CSV seed file mid-edit restarts the server against half-finished data, and the post is about suppressing that without giving up the watch loop. A small friction most people work around silently rather than fix.published 2024-04-26
Avoid design time CAP server restarts when maintaining local data files
Local development changed in @sap/cds-dk 7.9.1, 2024-05-02. Affects Runnable code.
ISO content for common CAP typesISO content for common CAP typesThe npm package that supplies ISO-standard content — countries, languages, currencies, timezones — for CAP's common types, and how it works underneath. The author flags the length and the reason for it up front, having followed the mechanism further than the question required, which is what makes it worth reading rather than a package announcement.published 2024-03-14
ISO content for common CAP types
Seed data changed in @sap/cds-dk 7.9.1, 2024-05-02. Affects Runnable code.
Using the UI5 Mockserver for Client-Specific Data and TestingUsing the UI5 Mockserver for Client-Specific Data and TestingWalks through a same-day feature in @sap-ux/ui5-middleware-fe-mockserver, 'Support autoloading mockdata file for specific tenants', which loads a <Entity>-<client>.json file keyed to the sap-client URL parameter and falls back to the entity's plain JSON file when no client-specific one exists. Shows the setup replacing generated mock data with hand-written JSON, then drives the same sap-client parameter through separate package.json scripts so wdi5 end-to-end tests can run against distinct tenant datasets.published 2024-11-18
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
Simplifying SAP BTP Authentication in Pipelines with SAP Passport and PlaywrightSimplifying SAP BTP Authentication in Pipelines with SAP Passport and PlaywrightClient-certificate login to BTP works locally and has historically not worked in automated pipelines. The post uses Playwright's then-new client certificate support to close that, which is a sideways use of a browser automation library and the reason it is worth recording — the constraint it removes is a CI constraint, not a testing one.published 2024-11-08
Testing your CAP HANA Artifacts with jest – including multitenancy, hdbprocedure and hdbviewTesting your CAP HANA Artifacts with jest – including multitenancy, hdbprocedure and hdbviewcds.test covers the service; this covers what is underneath it, where the artifact is an hdbprocedure or an hdbview that CDS never sees. That means a real HDI container, so most of the post is about where to get one and how to give CAP access to it — the tests are the easy part once that is true.Tristan, published 2022-08-30
Testing your CAP HANA Artifacts with jest – including multitenancy, hdbprocedure and hdbview
Testing has changed 3 times since this was published, most recently in @cap-js/cds-test 1.0.0, 2026-04-23. Affects A recipe, Runnable code.
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 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
SAP CAP: Controller - Service - Repository architectureSAP CAP: Controller - Service - Repository architectureThe pattern the author's two libraries exist to support, set out as a whole rather than one package at a time: a controller layer receiving the request, a service layer holding business logic, and a repository layer owning persistence — the separation CAP leaves to the developer once a model has produced an OData service. Read after the dispatcher and repository posts, or before them as the argument for both.published 2024-04-22
SAP CAP: Controller - Service - Repository architecture
@dxfrontier/cds-ts-dispatcher has been through 4 major lines since this was published, most recently 4 (2025-01), 5 (2025-07), 6 (2026-07). Affects Runnable code.
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
Exploring the TypeScript Ecosystem with @cap-js/cds-typer, cds-ts, and node-tsExploring the TypeScript Ecosystem with @cap-js/cds-typer, cds-ts, and node-tsPart one of two: a bookshop project built in TypeScript from cds init, with cds-typer added as a development dependency and the surrounding tools — cds-ts and node-ts — put in place so the project runs locally. A setup walkthrough rather than an argument about typing, and it stops at the point where the application works on a laptop; deployment is part two.satya-dev, published 2024-07-08
Exploring the TypeScript Ecosystem with @cap-js/cds-typer, cds-ts, and node-ts
@cap-js/cds-typer has been through 18 major lines since this was published, most recently 0.39 (2026-05), 0.40 (2026-06), 0.41 (2026-08). Affects A recipe, Runnable code.
Exploring the TypeScript Ecosystem with @cap-js/cds-typer, cds-ts, and node-ts Part - 2Exploring the TypeScript Ecosystem with @cap-js/cds-typer, cds-ts, and node-ts Part - 2Part two takes the TypeScript project from part one to Cloud Foundry: cds add mta, then the parts of the generated descriptor the author singles out as needing attention for a TypeScript build rather than a JavaScript one. The pair together is the whole path — typed model locally, then deployed — which is where a typing walkthrough usually stops short.satya-dev, published 2024-07-19
Exploring the TypeScript Ecosystem with @cap-js/cds-typer, cds-ts, and node-ts Part - 2
@cap-js/cds-typer has been through 17 major lines since this was published, most recently 0.39 (2026-05), 0.40 (2026-06), 0.41 (2026-08). Affects Runnable code.
Using the UI5 Mockserver for Client-Specific Data and TestingUsing the UI5 Mockserver for Client-Specific Data and TestingWalks through a same-day feature in @sap-ux/ui5-middleware-fe-mockserver, 'Support autoloading mockdata file for specific tenants', which loads a <Entity>-<client>.json file keyed to the sap-client URL parameter and falls back to the entity's plain JSON file when no client-specific one exists. Shows the setup replacing generated mock data with hand-written JSON, then drives the same sap-client parameter through separate package.json scripts so wdi5 end-to-end tests can run against distinct tenant datasets.published 2024-11-18