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LLM integrationSAP and community
A ChatGPT-like chat app built with modern SAP technologies (CAP, SAPUI5) – Part 1/3A ChatGPT-like chat app built with modern SAP technologies (CAP, SAPUI5) – Part 1/3The concepts before the code: what the GPT model and its API actually offer, and what the finished chat application looks like — personalities included. Written in the weeks when the ground was moving under it, and the post carries its own change log to prove it: GPT-3.5 added on 1 March, GPT-4 on 15 March, and an admission that a series planned as two posts became three.published 2023-02-22
A ChatGPT-like chat app built with modern SAP technologies (CAP, SAPUI5) – Part 1/3
cap-ui5-gpt-chat: no published releases, repository quiet for 41 months. Affects Runnable code.
A ChatGPT-like chat app built with modern SAP technologies (CAP, SAPUI5) – Part 2/3A ChatGPT-like chat app built with modern SAP technologies (CAP, SAPUI5) – Part 2/3The backend: CAP with TypeScript, the entities holding chats and personalities, and the service that talks to the API. This is where the streamed completion and the repositories behind the handler come from, which is the part of the sample still worth lifting even though the model access has since been superseded by AI Core.published 2023-02-24
A ChatGPT-like chat app built with modern SAP technologies (CAP, SAPUI5) – Part 2/3
cap-ui5-gpt-chat: no published releases, repository quiet for 41 months. Affects Runnable code.
A ChatGPT-like chat app built with modern SAP technologies (CAP, SAPUI5) – Part 3/3A ChatGPT-like chat app built with modern SAP technologies (CAP, SAPUI5) – Part 3/3The SAPUI5 frontend of the sample, and mostly an argument for writing UI5 in TypeScript: ES imports in place of sap.ui.define, a class with real private members in place of the underscore convention, and the service types generated from the CDS model copied into the UI package, so one IChats interface types the OData object the controller reads. The second half is structure — a formatter class and a singleton LayoutManager called from the XML view through core:require, a confirmation helper taking a callback, a dialog class resolving a promise, a generic createEntity<T> on a service class — all of it to keep every controller under 100 lines. What it says about arranging a UI5 app holds whatever model sits behind the chat; the tooling around it is of its date, and the post calls UI5's TypeScript support experimental.published 2023-02-27
A ChatGPT-like chat app built with modern SAP technologies (CAP, SAPUI5) – Part 3/3
cds2types. Affects Runnable code.
An Innovative Language Exchange App developed with SAP Build Apps, CAP, Kyma, and OpenAIAn Innovative Language Exchange App developed with SAP Build Apps, CAP, Kyma, and OpenAIA dormant internal app at SAP Japan revived with AI, built to solve a problem the team actually had — colleagues who could not talk to each other. Build Apps on the front, CAP on Kyma behind it, OpenAI in the middle.javieryw, published 2024-01-31
An Innovative Language Exchange App developed with SAP Build Apps, CAP, Kyma, and OpenAI
LLM integration changed in @cap-js/ai 1.0.0, 2026-04-28. Affects Runnable code.
Banking Sentinel: A Multi-Agent Credit-Risk Copilot on SAP BTP, Built on a Mixed AI StackBanking Sentinel: A Multi-Agent Credit-Risk Copilot on SAP BTP, Built on a Mixed AI StackThe risk it is chasing is a graph problem stated in banking terms: a borrower who looks safe alone and is the linchpin of a group ten times the size. Multi-agent, mixed AI stack, on BTP and CAP.Shahid, published 2026-06-24
Banking Sentinel: A Multi-Agent Credit-Risk Copilot on SAP BTP, Built on a Mixed AI Stack
Agent tooling changed in @cap-js/agents 0.9.1, 2026-08-14. Affects A recipe, Runnable code.
Building an LLM Agent in CAP Java with Spring AIBuilding an LLM Agent in CAP Java with Spring AIThe Java counterpart to the author's own Node.js post, and written as one: connecting to AI Core with the SAP AI SDK, then calling an agent and a tool through Spring AI. Opens with a section on libraries and workflows — which framework does what, and what is left to you — before any code.published 2026-06-08
Building an LLM Agent in CAP Java with Spring AI
Agent tooling changed in @cap-js/agents 0.9.1, 2026-08-14. Affects Runnable code.
Building an LLM Agent using CAPBuilding an LLM Agent using CAPThe argument is that CAP is already most of what an agent framework wants — services, handlers, a typed model — so the agent is built inside it rather than beside it. AI Core through sap-ai-sdk, then Langchain for the agent and its tools. Long, with a TLDR at the top for people who want the shape without the walk.published 2026-05-27
Building an LLM Agent using CAP
Agent tooling changed in @cap-js/agents 0.9.1, 2026-08-14. Affects Runnable code.
cds-toon-ai-protocol-adapter: a pragmatic way to cut AI token costs using SAP CAPcds-toon-ai-protocol-adapter: a pragmatic way to cut AI token costs using SAP CAPNames a cost most CAP-plus-LLM writing ignores: every JSON payload streamed to a model is billed by its verbosity, in latency as well as money. The plugin brings TOON — Token-Oriented Object Notation — to a CAP service so the wire format changes without the service code doing so, in a REST variant and an OData one, with token counts reported on both sides.published 2026-01-25
Data MaskingData MaskingData masking replaces identifiable or confidential text in a prompt with placeholders such as <Person_0> or <Organization_1> before it reaches a large language model, using pattern matching and machine learning to find what to replace. The page states SAP AI Core supports it as a feature and sets out five steps for applying it, defining the masking scope, choosing a technique, preserving the prompt's intent, checking compliance and risk, then testing and monitoring the result. That is the shape data masking takes on the BTP door.
Document GroundingDocument GroundingDocument Grounding is a managed retrieval-augmented-generation service under the Generative AI Hub on BTP, which SAP's page on SAP AI Core places inside that service: it ingests documents from Amazon S3, SharePoint, SAP Document Management Service, SAP Work Zone or an SFTP server, and handles chunking, embedding and retrieval itself, refreshing content automatically when a source document changes. The page states this managed path is recommended for most enterprise scenarios because it covers the whole lifecycle end to end, and offers a separate Document Grounding Vector API for data that is already chunked and embedded, for cases that need finer control over chunking and metadata.
Elevating Data Privacy in SAP CAP based GenAI Applications with CAP LLM PluginElevating Data Privacy in SAP CAP based GenAI Applications with CAP LLM PluginThe question underneath the enthusiasm: what leaves your landscape when a prompt goes to a model. The plugin's answer is to anonymise the sensitive fields through HANA before the prompt is sent, and this is the post that explains why that is the design rather than an option.AkashAmarendra, published 2024-02-02
Enhancing Enterprise Applications: AI-powered User Experience with SAP CAP AI PluginEnhancing Enterprise Applications: AI-powered User Experience with SAP CAP AI PluginStarts from the blank form nobody wants to fill in, and asks what an enterprise application should do about it. The AI is in service of that rather than the subject of it.published 2026-04-29
HANA Cloud’s VECTOR EMBEDDING in CAP and Comparison with OpenAI EmbeddingHANA Cloud’s VECTOR EMBEDDING in CAP and Comparison with OpenAI EmbeddingTwo ways to produce the same embedding, run side by side: HANA Cloud's own VECTOR_EMBEDDING function against Azure OpenAI through the CAP LLM plugin. The CDS side is short — an element of type cds.Vector maps to REAL_VECTOR on deploy — so what remains is the comparison, which is the thing you cannot get from either product's documentation alone.lalitmohan, published 2025-04-09
How to Reduce Prompt Token Costs Using Toon = Save MoneyHow to Reduce Prompt Token Costs Using Toon = Save MoneyToken spend treated as a running cost rather than a detail, and TOON as the lever. Companion reading to the CAP adapter for the same format that is indexed here.Yogananda, published 2025-11-12
How to Reduce Prompt Token Costs Using Toon = Save Money
LLM integration changed in @cap-js/ai 1.0.0, 2026-04-28. Affects A recipe, Runnable code.
Integrating a Custom AI Model into SAP CAP Using AI LaunchpadIntegrating a Custom AI Model into SAP CAP Using AI LaunchpadYour own model rather than a hosted one: deployed to AI Core, made callable through AI Launchpad, then reached from CAP. The case a lot of companies ask about and few posts cover.egeAksoyek, published 2026-03-20
Integrating a Custom AI Model into SAP CAP Using AI Launchpad
LLM integration changed in @cap-js/ai 1.0.0, 2026-04-28. Affects Runnable code.
Natural Language Queries for SAP CAP via MCP: The LLM Translates, CDS ExecutesNatural Language Queries for SAP CAP via MCP: The LLM Translates, CDS ExecutesThe division of labour is the argument, and it is in the subtitle: the model turns English into a CDS query and CDS runs it, so nothing generates SQL and nothing hallucinates a join. Schema annotations do the resolving. Long, with the package, the repository and the MCP registry entry all linked.Shahid, published 2026-06-25
Prompt TemplatingPrompt TemplatingPrompt templating replaces a static prompt with a structured, reusable template whose placeholders are filled in at runtime, which the page says helps LLM responses stay consistent and lets the same instructions be adapted across tasks. On SAP AI Core this is implemented through the Prompt Registry, and the page states that storing prompts as plain strings in code is possible but not recommended. That is prompt management as a stored and managed object rather than a string embedded in the caller.
RAG with SAP HANA Cloud Vector Engine, GenAI Hub & CAPRAG with SAP HANA Cloud Vector Engine, GenAI Hub & CAPThe end-to-end version: a CAP service exposing the vector engine and the AI hub behind a couple of endpoints, answering where a CodeJam is on a given date. It has aged in a way the author has marked in the page itself — the section on the CAP LLM plugin now carries "(Outdated)" in its own heading — so read the embedding preparation and the retrieval shape, and check the plugin part against the package.KevinR, published 2024-05-21
Streaming LLM Output with CAP and WebSocketsStreaming LLM Output with CAP and WebSocketsTokens arriving from the AI SDK's orchestration module, forwarded to the browser as they come rather than after the model finishes. Covers all four pieces — enabling WebSocket support in CAP, a service with actions and events, the streaming itself, and a frontend on the native WebSocket API — which is what makes it the clearest case for why a CAP service would want a socket at all.RobinP, published 2025-11-18
Streaming LLM Output with CAP and WebSockets
LLM integration changed in @cap-js/ai 1.0.0, 2026-04-28. Affects A recipe, Runnable code.
UI5 AI Features library is now an npm PackageUI5 AI Features library is now an npm PackageThe release note for a demo turning into a dependency, and it is explicit about why that matters: the earlier version worked, but using it meant cloning the repo and copying both halves, which stops working the moment one of them changes. The post walks through what shipping the CAP plugin and the be.wl.ai control library in one npm version buys — a client and server contract that cannot drift — then lists the eleven controls by group, shows the two-line configuration that activates each half, and notes that this version is actually deployed on BTP behind both a standalone approuter and Work Zone. It closes on the demo repository, written with no library source in it as the test that the package stands alone.published 2026-08-31
UI5 AI Features library is now an npm Package
cds 8, line ended. Affects Runnable code.
RAG on CDSSAP and community
Document GroundingDocument GroundingDocument Grounding is a managed retrieval-augmented-generation service under the Generative AI Hub on BTP, which SAP's page on SAP AI Core places inside that service: it ingests documents from Amazon S3, SharePoint, SAP Document Management Service, SAP Work Zone or an SFTP server, and handles chunking, embedding and retrieval itself, refreshing content automatically when a source document changes. The page states this managed path is recommended for most enterprise scenarios because it covers the whole lifecycle end to end, and offers a separate Document Grounding Vector API for data that is already chunked and embedded, for cases that need finer control over chunking and metadata.
HANA Cloud’s VECTOR EMBEDDING in CAP and Comparison with OpenAI EmbeddingHANA Cloud’s VECTOR EMBEDDING in CAP and Comparison with OpenAI EmbeddingTwo ways to produce the same embedding, run side by side: HANA Cloud's own VECTOR_EMBEDDING function against Azure OpenAI through the CAP LLM plugin. The CDS side is short — an element of type cds.Vector maps to REAL_VECTOR on deploy — so what remains is the comparison, which is the thing you cannot get from either product's documentation alone.lalitmohan, published 2025-04-09
RAG with SAP HANA Cloud Vector Engine, GenAI Hub & CAPRAG with SAP HANA Cloud Vector Engine, GenAI Hub & CAPThe end-to-end version: a CAP service exposing the vector engine and the AI hub behind a couple of endpoints, answering where a CodeJam is on a given date. It has aged in a way the author has marked in the page itself — the section on the CAP LLM plugin now carries "(Outdated)" in its own heading — so read the embedding preparation and the retrieval shape, and check the plugin part against the package.KevinR, published 2024-05-21
Using HANA Cloud’s "VECTOR_EMBEDDING" Function in CAPUsing HANA Cloud’s "VECTOR_EMBEDDING" Function in CAPEmbeddings generated inside the database rather than fetched from AI Core or an external model — a Q4 2024 HANA Cloud function, used from CAP. The shift it describes is where the embedding step lives, which changes what has to be deployed and what has to be called.published 2025-03-02
Audit loggingSAP only
How to implement SAP BTP Audit log service in a CAP ApplicationHow to implement SAP BTP Audit log service in a CAP ApplicationThe setup half: binding the BTP Audit Log service to a CAP application and getting the annotated path working, which is the step before anything custom becomes a question.KrishnaSharma7, published 2025-01-01
How to implement SAP BTP Audit log service in a CAP Application
@cap-js/audit-logging has been through 2 major lines since this was published: 0.9 (2025-06), 1 (2025-07). Affects A recipe.
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
AuthenticationSAP and community
Building Custom Authentication in SAP CAPBuilding Custom Authentication in SAP CAPpublished 2025-10-25
Building Custom Authentication in SAP CAP
cds 9, maintenance until 2027-06. Affects A recipe.
Enabling Authorization Policies in SAP Cloud Identity Services - IAS with AMS/CAPEnabling Authorization Policies in SAP Cloud Identity Services - IAS with AMS/CAPAuthorization policies defined in Identity Authentication and consumed by a CAP application through AMS — the configuration half of the move away from XSUAA scopes, from the identity service's side rather than the application's.Yogananda, published 2024-12-27
Enabling Authorization Policies in SAP Cloud Identity Services - IAS with AMS/CAP
Authorization changed in CAP Java 3.7.1, 2025-01-30. Affects A recipe.
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.
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.
SAP Build Process Automation – Use Principal Propagation in Actions sample: CAP Node.js ServiceSAP Build Process Automation – Use Principal Propagation in Actions sample: CAP Node.js ServiceThe follow-up that carries the identity through. It takes the CAP service from the Actions tutorial and puts the calling user's identity behind it — an XSUAA instance, a trust configuration, an OAuthSAMLBearerAssertion destination, and the service changed to use that instance — so a step runs on behalf of a person rather than as the process.TJe, published 2023-06-22
SAP Build Process Automation – Use Principal Propagation in Actions sample: CAP Node.js Service
Workflow integration has changed twice since this was published, most recently in @cap-js/n8n 0.0.1, 2026-08-27. Affects A recipe.
SAP CAP JWT Token Flow in codeSAP CAP JWT Token Flow in codeOne question, answered precisely: at what point does the JWT exist and how does it end up on req.headers.authorization in a CAP handler. XSUAA issues it and the approuter carries it, and the post follows it through both.sandeepmalhotra, published 2023-04-03
SAP CAP JWT Token Flow in code
Authentication changed in CAP Java 3.0.1, 2024-07-26. Affects Runnable code.
Securing CAP Applications with SAP Cloud Identity Services and AMSSecuring CAP Applications with SAP Cloud Identity Services and AMSIdentity Authentication and AMS together as the current answer for a CAP application — authentication, single sign-on and the identity lifecycle on one side, policies on the other.gopalanand, published 2025-12-04
Understanding security approaches in SAP CAP using XSUAA in node.js flavor and MTA.Understanding security approaches in SAP CAP using XSUAA in node.js flavor and MTA.The long version, from the MTA project outward: what the deployment descriptor has to contain, how the authentication flow actually runs, and then the npm modules doing the work — @sap/xssec and @sap/xsenv named and explained rather than left as dependencies. Old, and the module names have moved on, but the flow it draws has not.balbinosoares, published 2020-03-16
Understanding security approaches in SAP CAP using XSUAA in node.js flavor and MTA.
Authorization has changed twice since this was published, most recently in CAP Java 3.7.1, 2025-01-30. Affects A recipe, Runnable code.
XSUAA Based Authentication - Using Managed ApprouterXSUAA Based Authentication - Using Managed ApprouterOne half of a pair published the same day, both starting from capire's list of authentication kinds and then going end to end on XSUAA. This is the managed approuter route, where the platform runs the router and the application supplies configuration rather than a module.rahul_rajagopal, published 2023-09-25
XSUAA Based Authentication - Using Managed Approuter
Authorization has changed twice since this was published, most recently in CAP Java 3.7.1, 2025-01-30. Affects A recipe.
AuthorizationSAP and community
Dynamic authorisation with user attributes in SAP CAP and AMSDynamic authorisation with user attributes in SAP CAP and AMSThe same argument as the XSUAA-to-AMS piece, opened from a concrete failure: an acquisition puts 500 users on sales data restricted by division, and role-based access control answers it with Sales_Manager_EMEA, Sales_Manager_APAC and so on until the roles multiply past managing. Attribute-based authorisation replaces the set with one policy carrying a restriction, and the post walks through defining it in AMS against Cloud Identity Services. The clearest statement of role explosion among the three AMS pieces here.pedro_iranzo, published 2026-05-04
Enabling Authorization Policies in SAP Cloud Identity Services - IAS with AMS/CAPEnabling Authorization Policies in SAP Cloud Identity Services - IAS with AMS/CAPAuthorization policies defined in Identity Authentication and consumed by a CAP application through AMS — the configuration half of the move away from XSUAA scopes, from the identity service's side rather than the application's.Yogananda, published 2024-12-27
Enabling Authorization Policies in SAP Cloud Identity Services - IAS with AMS/CAP
Authorization changed in CAP Java 3.7.1, 2025-01-30. Affects A recipe.
From XSUAA to AMS: Architecting S4HANA CAP Extensions with Policy-Based AuthorizationFrom XSUAA to AMS: Architecting S4HANA CAP Extensions with Policy-Based AuthorizationWhy scope-based authorization runs out, argued from enterprise extension work rather than from the documentation: XSUAA handles roles well, but real requirements are business-context restrictions — country, company code, organisational unit — and expressing those as scopes does not scale. The migration to policy-based authorization is presented as an architectural move for S/4HANA extensions rather than a configuration change.Avinash Vaidya, published 2026-05-27
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
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.
SAP BTP XSUAA Security Configuration Comparison: Attribute-Based vs. Authority-Based ApproachesSAP BTP XSUAA Security Configuration Comparison: Attribute-Based vs. Authority-Based ApproachesTwo shapes of the same xs-security.json set against each other, with the resulting JWT printed for both. The consequence for application code is what makes it worth reading: under the attribute-based configuration a CAP handler reads req.user.attr.department, and under the authority-based one it does not, because the attribute is not there. Carries a migration guide between the two.rajeshkputumbaka, published 2026-02-18
Securing a CAP Node.js App with SAP AMS on BTP Cloud FoundrySecuring a CAP Node.js App with SAP AMS on BTP Cloud FoundryThe end-to-end version: a CAP Node.js project from cds init, role-based access through the Authorization Management Service and Identity Authentication Service, and an MTA deployment to Cloud Foundry. The prerequisite list is the useful part to read first — HANA Cloud, an IAS tenant and an AMS entitlement — because it says plainly what this path costs before you are three steps into it.Jacky Liu, published 2026-07-17
Securing CAP Applications with SAP Cloud Identity Services and AMSSecuring CAP Applications with SAP Cloud Identity Services and AMSIdentity Authentication and AMS together as the current answer for a CAP application — authentication, single sign-on and the identity lifecycle on one side, policies on the other.gopalanand, published 2025-12-04
Understanding security approaches in SAP CAP using XSUAA in node.js flavor and MTA.Understanding security approaches in SAP CAP using XSUAA in node.js flavor and MTA.The long version, from the MTA project outward: what the deployment descriptor has to contain, how the authentication flow actually runs, and then the npm modules doing the work — @sap/xssec and @sap/xsenv named and explained rather than left as dependencies. Old, and the module names have moved on, but the flow it draws has not.balbinosoares, published 2020-03-16
Understanding security approaches in SAP CAP using XSUAA in node.js flavor and MTA.
Authorization has changed twice since this was published, most recently in CAP Java 3.7.1, 2025-01-30. Affects A recipe, Runnable code.
Why developers should care about credential-types for xsuaa?Why developers should care about credential-types for xsuaa?Rotating secrets, argued from a habit rather than a feature: the author names the practice implicit in many beginner tutorials — lifting a secret out of a binding to use it elsewhere — and notes CAP has features that make it unnecessary in development. Then the three credential types side by side, configured on a CAP application's uaa resource in mta.yaml and through a deployment extension.former_member2839, published 2022-07-05
Why developers should care about credential-types for xsuaa?
Authorization has changed twice since this was published, most recently in CAP Java 3.7.1, 2025-01-30. Affects A recipe, Runnable code.
XSUAA Based Authentication - Using Managed ApprouterXSUAA Based Authentication - Using Managed ApprouterOne half of a pair published the same day, both starting from capire's list of authentication kinds and then going end to end on XSUAA. This is the managed approuter route, where the platform runs the router and the application supplies configuration rather than a module.rahul_rajagopal, published 2023-09-25
XSUAA Based Authentication - Using Managed Approuter
Authorization has changed twice since this was published, most recently in CAP Java 3.7.1, 2025-01-30. Affects A recipe.
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.
Change trackingSAP and community
New and improved: Change Tracking pluginNew and improved: Change Tracking pluginThe 2.0 announcement, and unusually candid about why there is a 2.0 at all: the plugin already existed and was, in the author's words, plagued by many issues. What it records is every insert, update and delete with the user and the timestamp, aimed at root-cause analysis and at detecting changes nobody authorised. Generally available as of this post, having been hinted at as beta in the April release notes.published 2026-06-12
New and improved: Change Tracking plugin
cds 2, line ended. Affects A recipe, Runnable code.
Data privacySAP only
Elevating Data Privacy in SAP CAP based GenAI Applications with CAP LLM PluginElevating Data Privacy in SAP CAP based GenAI Applications with CAP LLM PluginThe question underneath the enthusiasm: what leaves your landscape when a prompt goes to a model. The plugin's answer is to anonymise the sensitive fields through HANA before the prompt is sent, and this is the post that explains why that is the design rather than an option.AkashAmarendra, published 2024-02-02
Input validationSAP and community
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
ConfigurationSAP only
Tips for running CAP nodejs in SAP BTPTips for running CAP nodejs in SAP BTPDeliberately not a summary of capire: the author says up front that nothing here repeats the documented best practices, and the subject is configuration for running cloud-natively rather than correctly. Examples target Cloud Foundry, with the claim that they hold for Kyma too.published 2023-06-21
Tips for running CAP nodejs in SAP BTP
Deployment changed in @sap/cds-dk 8.9.0, 2025-03-31. Affects Runnable code.
DeploymentSAP and community
#BTP #SAPCAP: Quirky Nuggets (N03-N04)#BTP #SAPCAP: Quirky Nuggets (N03-N04)Two unrelated findings in one post, which is the format of the series: the OData operators tried against a CAP service — with a schema of deliberately awkward types to try them on — and undeploying database artifacts, which is the half people hit in anger. Numbered N03 and N04 of a run that continues either side.Ajit_K_Panda, published 2023-06-05
#BTP #SAPCAP: Quirky Nuggets (N03-N04)
Deployment changed in @sap/cds-dk 8.9.0, 2025-03-31. Affects A recipe, Runnable code.
Build and deploy a CAP Project Node.js API with a SAP Fiori Elements UI and a managed approuter configurationBuild and deploy a CAP Project Node.js API with a SAP Fiori Elements UI and a managed approuter configurationGeneration and deployment in one piece, with the managed approuter rather than a standalone one — so the routing is configuration instead of a module, and the post covers what that changes at deploy time.jlong, published 2022-02-10
Build and deploy a CAP Project Node.js API with a SAP Fiori Elements UI and a managed approuter configuration
Fiori annotations changed in @sap/cds-dk 9.6.0, 2025-12-17. Affects A recipe, Runnable code.
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
CAP on Kyma - Deploy your CAP apps to SAP BTP, Kyma RuntimeCAP on Kyma - Deploy your CAP apps to SAP BTP, Kyma RuntimeThe post that superseded the author's own earlier one, written for cds and cds-dk 6 when Kyma deployment became something the tooling did rather than something you assembled. The current reference of the several Kyma posts here.Uwe_Klinger, published 2022-07-12
CAP on Kyma - Deploy your CAP apps to SAP BTP, Kyma Runtime
Deployment changed in @sap/cds-dk 8.9.0, 2025-03-31. Affects A recipe, Runnable code.
cf-create-app: Create End-to-End apps and deploy to Cloud Foundry in minutescf-create-app: Create End-to-End apps and deploy to Cloud Foundry in minutesA generator from 2020 that goes further than scaffolding — an end-to-end application created and deployed to Cloud Foundry in one run. Predates most of what cds add now does.former_member604013, published 2020-07-29
cf-create-app: Create End-to-End apps and deploy to Cloud Foundry in minutes
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.
Create a CAP Application with SAP HANA Cloud from Scratch and Deploy to Cloud FoundryCreate a CAP Application with SAP HANA Cloud from Scratch and Deploy to Cloud FoundryThe whole lifecycle in one post rather than a series — model, service, HANA binding, build, deploy. Useful as a single reference for the order things have to happen in, which is the part that is easy to get wrong when it is spread over six posts.MaheshSirsat1708, published 2025-11-19
Create a CAP Application with SAP HANA Cloud from Scratch and Deploy to Cloud Foundry
Database connectors changed in @sap/cds 10.1.0, 2026-09-07. Affects A recipe.
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
From R/3 ABAP to CAP/Fiori Elements on SAP BTP- DeploymentFrom R/3 ABAP to CAP/Fiori Elements on SAP BTP- DeploymentThe doing half: the steps and the code that got the application from the first post deployed and working. Shorter, and it assumes the argument has already been made.former_member231477, published 2021-04-30
From R/3 ABAP to CAP/Fiori Elements on SAP BTP- Deployment
Fiori annotations changed in @sap/cds-dk 9.6.0, 2025-12-17. Affects Runnable code.
Fullstack CAP Application with HANA Cloud (Decoupled Architecture) [Part-4]Fullstack CAP Application with HANA Cloud (Decoupled Architecture) [Part-4]The switch from SQLite to HANA and the first deploy of the back end to Cloud Foundry — the point in the series where the persistence stops being a file and the build starts producing HDI artifacts.sanjucs, published 2026-05-12
Fullstack CAP Application with HANA Cloud (Decoupled Architecture) [Part-4]
Database connectors changed in @sap/cds 10.1.0, 2026-09-07. Affects A recipe.
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
Part 1: Creating and Deploying a SAP CAP Application with SAP HANA on SAP BTP (Cloud Foundry)Part 1: Creating and Deploying a SAP CAP Application with SAP HANA on SAP BTP (Cloud Foundry)Opens with the observation the whole series rests on — CAP is usually demonstrated locally, and the interesting part starts when it is deployed. Part one of the run that continues into PostgreSQL and Work Zone.yashbhosle789, published 2026-02-25
Part 1: Creating and Deploying a SAP CAP Application with SAP HANA on SAP BTP (Cloud Foundry)
Database connectors changed in @sap/cds 10.1.0, 2026-09-07. Affects A recipe.
Part 2: Creating and Deploying a CAP Application with PostgreSQL, Hyperscaler OptionPart 2: Creating and Deploying a CAP Application with PostgreSQL, Hyperscaler OptionThe middle of a series that runs from database to Work Zone: the CAP application from part one pointed at PostgreSQL on the hyperscaler option, and deployed. The service binding and the build are where it spends its time.yashbhosle789, published 2026-03-04
Part 2: Creating and Deploying a CAP Application with PostgreSQL, Hyperscaler Option
Database connectors changed in @sap/cds 10.1.0, 2026-09-07. Affects A recipe.
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 - Optimize your build MTA projects with several ui appsSAP CAP - Optimize your build MTA projects with several ui appsWhat the Business Application Studio wizard writes into mta.yaml stops scaling somewhere past a couple of dozen UI applications, because every one of them gets its own build step. The post is about the build phase specifically, and reads as a report from a project large enough to have hit the wall rather than as a general optimisation.published 2022-04-28
SAP CAP - Optimize your build MTA projects with several ui apps
Deployment changed in @sap/cds-dk 8.9.0, 2025-03-31. Affects A recipe.
Speed up deployment for CAP using TurborepoSpeed up deployment for CAP using TurborepoImpatience as a method: minutes of waiting on MBT and cf deploy sent the author looking for alternatives. It is fair to MBT first — a wrapper doing the whole deployment in one go, creating services and applications along the way — before showing what Turborepo changes about the build half. The trade it makes is explicit rather than assumed.published 2024-12-06
Speed up deployment for CAP using Turborepo
Deployment changed in @sap/cds-dk 8.9.0, 2025-03-31. Affects Runnable code.
SQLite as database for a multi-target (/productive) CAP ApplicationSQLite as database for a multi-target (/productive) CAP ApplicationOpens with "Not recommended but possible", and then names the two cases where it is the right call anyway: a showcase, and a landscape with no HANA Cloud available. The caveat is the content.Christopher_Ketzler, published 2024-07-05
SQLite as database for a multi-target (/productive) CAP Application
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.
Surviving and Thriving with the SAP Cloud Application Programming Model: Deployment to SAP BTP, Kyma runtimeSurviving and Thriving with the SAP Cloud Application Programming Model: Deployment to SAP BTP, Kyma runtimeAn episode of the author's #CAPTricks series, and it reads like one — long, opinionated, and organised around the things that actually go wrong on the way to a deployed CAP application rather than around the documented happy path.maxstreifeneder, published 2023-03-07
Surviving and Thriving with the SAP Cloud Application Programming Model: Deployment to SAP BTP, Kyma runtime
Deployment changed in @sap/cds-dk 8.9.0, 2025-03-31. Affects A recipe, Runnable code.
Tips for running CAP nodejs in SAP BTPTips for running CAP nodejs in SAP BTPDeliberately not a summary of capire: the author says up front that nothing here repeats the documented best practices, and the subject is configuration for running cloud-natively rather than correctly. Examples target Cloud Foundry, with the claim that they hold for Kyma too.published 2023-06-21
Tips for running CAP nodejs in SAP BTP
Deployment changed in @sap/cds-dk 8.9.0, 2025-03-31. Affects Runnable code.
LoggingSAP only
How to implement SAP BTP Audit log service in a CAP ApplicationHow to implement SAP BTP Audit log service in a CAP ApplicationThe setup half: binding the BTP Audit Log service to a CAP application and getting the annotated path working, which is the step before anything custom becomes a question.KrishnaSharma7, published 2025-01-01
How to implement SAP BTP Audit log service in a CAP Application
@cap-js/audit-logging has been through 2 major lines since this was published: 0.9 (2025-06), 1 (2025-07). Affects A recipe.
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
Developing CAP java/node.js mixed mono Multitenant SaaS Applications with Shared DatabaseDeveloping CAP java/node.js mixed mono Multitenant SaaS Applications with Shared DatabaseTwo CAP projects, one Java and one Node.js, in one npm workspace sharing a single tenant database. The interesting part is which sidecar wins: both sub-projects get an MTX sidecar, both have cds.xt.SaasProvisioningService switched off, and a third onboarding project keeps provisioning to itself. Configuration listings rather than prose, and it assumes you already know why you would want this.xuelong, published 2025-01-08
Developing CAP java/node.js mixed mono Multitenant SaaS Applications with Shared Database
@sap/cds-mtxs has been through 2 major lines since this was published: 3 (2025-06), 4 (2026-06). Affects A recipe, Runnable code.
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
Getting your head into Cloud Application Programming model multitenancyGetting your head into Cloud Application Programming model multitenancyOpens by telling you it is out of date and pointing at the HANA Academy series instead, which is more honest than most posts manage. What survives the staleness is the discussion and context around multitenancy that the title promises — the reasoning, not the commands.andrew_lunde, published 2020-08-20
Getting your head into Cloud Application Programming model multitenancy
Multitenancy has changed twice since this was published, most recently in @sap/cds 7.0.0, 2023-06-22. Affects Runnable code.
Multitenant application using Cloud Application Programming Model (CAP)Multitenant application using Cloud Application Programming Model (CAP)A worked multitenant application on the Java SDK with the mtx sidecar beside it — the arrangement where provisioning lives in a separate Node process even when the application is Java. Includes the UI module, so the subscription is visible end to end.former_member733211, published 2021-05-19
Multitenant application using Cloud Application Programming Model (CAP)
Multitenancy has changed twice since this was published, most recently in @sap/cds 7.0.0, 2023-06-22. Affects A recipe, Runnable code.
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
SaaS Self-Onboarding and One-Domain Concept in SAP BTP, Kyma Runtime using CAPSaaS Self-Onboarding and One-Domain Concept in SAP BTP, Kyma Runtime using CAPTwo requirements that only appear once a SaaS application has customers: subscribing a tenant end-to-end without the provider doing it by hand, and serving every tenant from one domain instead of one host per subscriber. Kyma runtime, and the post is a summary pointing at an Expert Feature tutorial in the sample repository — it says so itself, offering a one-minute read as the entry point.martinfrick, published 2023-06-01
SaaS Self-Onboarding and One-Domain Concept in SAP BTP, Kyma Runtime using CAP
Multitenancy changed in @sap/cds 7.0.0, 2023-06-22. Affects Runnable code.
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.
TelemetrySAP and community
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
SAP BTP Showcase – SAP Continuous Integration and Delivery (SAP CI&D) for SAP HANA CloudSAP BTP Showcase – SAP Continuous Integration and Delivery (SAP CI&D) for SAP HANA CloudA pipeline for the database half of a CAP application, built with cds add pipeline — one command that writes a Jenkinsfile and a .pipeline folder — and then the mta module that makes a database change deploy itself.gcalixtos, published 2021-01-27
SAP BTP Showcase – SAP Continuous Integration and Delivery (SAP CI&D) for SAP HANA Cloud
Database connectors has changed twice since this was published, most recently in @sap/cds 10.1.0, 2026-09-07. Affects Runnable code.
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
Editor supportSAP and community
Migrating Your CAP Applications from SAP Web IDE to SAP Business Application StudioMigrating Your CAP Applications from SAP Web IDE to SAP Business Application StudioA migration checklist, and a reminder of how much of a CAP project used to be editor-specific: Web IDE configuration files to delete, a build to move to the Cloud MTA Build Tool, a CAP Java version to raise. Historical — Web IDE is gone — but it is the clearest list of what the tooling boundary used to include.liat_b, published 2020-07-09
Migrating Your CAP Applications from SAP Web IDE to SAP Business Application Studio
Editor support changed in @sap/cds-dk 8.8.0, 2025-03-04. Affects A recipe.
Part 1: How to create CAPM project in BASPart 1: How to create CAPM project in BASThe claim in the opening is the interesting part — database, service and UI without switching technologies — and then the project that follows from it. Part one, and it stops at a project that runs.Vennilla00, published 2026-03-05
Part 1: How to create CAPM project in BAS
Generators changed in @sap/cds-dk 10.0.3, 2026-07-02. Affects A recipe.
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.
Use Tasks in Visual Studio Code to start a cds service, an approuter and launch a browser in one goUse Tasks in Visual Studio Code to start a cds service, an approuter and launch a browser in one gocds watch serves the service and the app folder but not the approuter, so anything needing a JWT means a second terminal started by hand. This replaces that with a VS Code task definition — the tasks.json is in the post — so the whole local stack comes up on one command.pieterjanssens, published 2021-04-09
Use Tasks in Visual Studio Code to start a cds service, an approuter and launch a browser in one go
Local development has changed twice since this was published, most recently in @sap/cds-dk 7.9.1, 2024-05-02. Affects Runnable code.
GeneratorsSAP and community
cf-create-app: Create End-to-End apps and deploy to Cloud Foundry in minutescf-create-app: Create End-to-End apps and deploy to Cloud Foundry in minutesA generator from 2020 that goes further than scaffolding — an end-to-end application created and deployed to Cloud Foundry in one run. Predates most of what cds add now does.former_member604013, published 2020-07-29
cf-create-app: Create End-to-End apps and deploy to Cloud Foundry in minutes
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.
Part 1: How to create CAPM project in BASPart 1: How to create CAPM project in BASThe claim in the opening is the interesting part — database, service and UI without switching technologies — and then the project that follows from it. Part one, and it stops at a project that runs.Vennilla00, published 2026-03-05
Part 1: How to create CAPM project in BAS
Generators changed in @sap/cds-dk 10.0.3, 2026-07-02. Affects A recipe.
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.
LintingSAP and community
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
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.
CAP PostgreSql setup local debugging using Docker - Part 2CAP PostgreSql setup local debugging using Docker - Part 2PostgreSQL in a container so the local loop matches the deployed one — the thing SQLite quietly stops you doing. Short, and it assumes the project from part one already runs.ramonlee5, published 2023-11-22
CAP PostgreSql setup local debugging using Docker - Part 2
Database connectors has changed twice since this was published, most recently in @sap/cds 10.1.0, 2026-09-07. Affects A recipe.
CAP Typescript + Fiori Typescript + live reload Initial app setupCAP Typescript + Fiori Typescript + live reload Initial app setupA full-stack TypeScript starting point recorded as it was arrived at — the terminal commands and the configuration files, in order, for the CAP side, the conversion to TypeScript, and then the Fiori side. The author is explicit that it takes a while to go through, which is the honest framing for a setup that has this many steps.Christophe_SW, published 2023-06-18
CAP Typescript + Fiori Typescript + live reload Initial app setup
TypeScript patterns changed in @cap-js/cds-typer 0.5.0, 2023-07-25. Affects Runnable code.
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
Creating a Hybrid CAP (Node.js) Profile with PostgreSQL on BTP from Business Application StudioCreating a Hybrid CAP (Node.js) Profile with PostgreSQL on BTP from Business Application StudioHybrid testing is documented for HANA; this is the same profile against a PostgreSQL instance on BTP, driven from a BAS dev space rather than a laptop. Proposed under editor support because of where it runs, but the subject is the binding: what cds bind writes, and what has to be true of the service instance and the tunnel for a local process to reach it.valentincadart, published 2025-10-02
Creating a Hybrid CAP (Node.js) Profile with PostgreSQL on BTP from Business Application Studio
Database connectors changed in @sap/cds 10.1.0, 2026-09-07. Affects Runnable code.
Develop SAP CAP apps inside a VS Code Docker ContainerDevelop SAP CAP apps inside a VS Code Docker ContainerA VS Code dev container configuration with everything a CAP project needs already in it, published as a repository rather than as instructions. The 2020 half of a pair whose other half, four years later, does the same for Lazyvim — the same author solving the same problem twice as his editor changed.published 2020-02-20
Develop SAP CAP apps inside a VS Code Docker Container
Local development has changed twice since this was published, most recently in @sap/cds-dk 7.9.1, 2024-05-02. Affects Runnable code.
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
Fullstack CAP Application with HANA Cloud (Decoupled Architecture) [Part-1]Fullstack CAP Application with HANA Cloud (Decoupled Architecture) [Part-1]The first of six, and it does the thing the later parts depend on: build the Incident Management application against SQLite on a laptop, with no cloud database in sight. The series is called decoupled because the front end and the back end are deployed separately, and this part is entirely the back end.sanjucs, published 2026-05-06
Fullstack CAP Application with HANA Cloud (Decoupled Architecture) [Part-1]
Database connectors changed in @sap/cds 10.1.0, 2026-09-07. Affects A recipe, Runnable code.
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
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
SAP Tech Bytes: Using the SAP Approuter at dev time - a full-stack journey with UI5 and CAPSAP Tech Bytes: Using the SAP Approuter at dev time - a full-stack journey with UI5 and CAPGetting UI5 Tooling and the CAP server onto one port under one command, using cds-plugin-ui5 — which the post presents as the thing that removes the proxy and destination configuration a full-stack dev setup otherwise needs. Part one of a journey that goes on to put the approuter in front at development time.published 2023-10-13
SAP Tech Bytes: Using the SAP Approuter at dev time - a full-stack journey with UI5 and CAP
cds-plugin-ui5 has been through 11 major lines since this was published, most recently 0.15 (2025-11), 0.16 (2025-12), 0.17 (2026-03). Affects Runnable code.
Set up VS Code on Chrome OS for local Application Programming Model developmentSet up VS Code on Chrome OS for local Application Programming Model developmentA CAP development environment on a Chromebook, written from preference rather than constraint — the author sets out why Chrome OS is his primary machine before showing the setup. Carries its own updates section noting what has changed since, which for a 2018 post about an operating system is most of it. The interest now is that local CAP development was portable this early.published 2018-10-16
Set up VS Code on Chrome OS for local Application Programming Model development
Local development has changed twice since this was published, most recently in @sap/cds-dk 7.9.1, 2024-05-02. Affects Runnable code.
Use SCP CF Destination service in NodeJs locallyUse SCP CF Destination service in NodeJs locallyReading a destination from a laptop, where the environment variable the destination service normally provides does not exist. A small gap with a real cost, since the alternative is deploying to test every change to a remote call.WouterLemaire, published 2020-05-28
Use SCP CF Destination service in NodeJs locally
Destinations changed in @sap-cloud-sdk/connectivity 4.0.0, 2025-03-04. Affects Runnable code.
Use Tasks in Visual Studio Code to start a cds service, an approuter and launch a browser in one goUse Tasks in Visual Studio Code to start a cds service, an approuter and launch a browser in one gocds watch serves the service and the app folder but not the approuter, so anything needing a JWT means a second terminal started by hand. This replaces that with a VS Code task definition — the tasks.json is in the post — so the whole local stack comes up on one command.pieterjanssens, published 2021-04-09
Use Tasks in Visual Studio Code to start a cds service, an approuter and launch a browser in one go
Local development has changed twice since this was published, most recently in @sap/cds-dk 7.9.1, 2024-05-02. Affects Runnable code.
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.
Plugin authoringSAP only
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
Seed dataSAP and community
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.
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
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
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.
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: Unit Testing using Mocha and ChaiCAP: Unit Testing using Mocha and ChaiUnit tests added to an existing CAP service rather than written alongside a new one, which is the harder and more common case. Mocha and Chai wired up by hand, from a time before cds.test was the obvious answer.jhodel18, published 2020-05-31
CAP: Unit Testing using Mocha and Chai
Testing has changed 3 times since this was published, most recently in @cap-js/cds-test 1.0.0, 2026-04-23. Affects Runnable code.
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
Getting Started with Unit Testing in SAP CAP Java ApplicationsGetting Started with Unit Testing in SAP CAP Java ApplicationsThe plain introduction: what the CAP Java framework gives you to test against, and how to start. Prerequisite to the same author's Copilot post.Anjali_Pathak, published 2025-07-28
Getting Started with Unit Testing in SAP CAP Java Applications
Testing changed in @cap-js/cds-test 1.0.0, 2026-04-23. Affects Runnable code.
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
Integration Tests in a Cloud Foundry Java App using SAP Cloud Application Programming ModelIntegration Tests in a Cloud Foundry Java App using SAP Cloud Application Programming ModelIntegration rather than unit tests, and from 2020 — the earliest testing entry here, and a reminder of what had to be assembled by hand before the framework had an answer.former_member428487, published 2020-02-23
Integration Tests in a Cloud Foundry Java App using SAP Cloud Application Programming Model
Testing has changed 3 times since this was published, most recently in @cap-js/cds-test 1.0.0, 2026-04-23. Affects Runnable code.
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.
TypeScript patternsSAP and community
CAP Typescript + Fiori Typescript + live reload Initial app setupCAP Typescript + Fiori Typescript + live reload Initial app setupA full-stack TypeScript starting point recorded as it was arrived at — the terminal commands and the configuration files, in order, for the CAP side, the conversion to TypeScript, and then the Fiori side. The author is explicit that it takes a while to go through, which is the honest framing for a setup that has this many steps.Christophe_SW, published 2023-06-18
CAP Typescript + Fiori Typescript + live reload Initial app setup
TypeScript patterns changed in @cap-js/cds-typer 0.5.0, 2023-07-25. Affects Runnable code.
CDS-TS-Dispatcher: Simplifying SAP CAP TypeScript DevelopmentCDS-TS-Dispatcher: Simplifying SAP CAP TypeScript DevelopmentThe first of a pair introducing the author's own libraries, and it states what it is reacting to: CAP derives OData services from a CDS model, but the communication between business logic, service and persistence layers is left to you, and the earlier attempt at the service-layer half, cds-routing-handler, appeared unmaintained against newer CAP. The dispatcher is the answer offered for that layer.published 2023-11-13
CDS-TS-Dispatcher: Simplifying SAP CAP TypeScript Development
@dxfrontier/cds-ts-dispatcher has been through 6 major lines since this was published, most recently 4 (2025-01), 5 (2025-07), 6 (2026-07). Affects Runnable code.
CDS-TS-Repository: Simplify SAP CAP Entity persistance with BaseRepositoryCDS-TS-Repository: Simplify SAP CAP Entity persistance with BaseRepositoryThe persistence half of the same pair, three days later: a BaseRepository putting entity access behind a typed repository rather than CQN written inline in a handler. Shares its opening argument with the dispatcher post — the layer between business logic and persistence is the part CAP leaves open — and the two are designed to be used together.published 2023-11-16
CDS-TS-Repository: Simplify SAP CAP Entity persistance with BaseRepository
@dxfrontier/cds-ts-repository has been through 9 major lines since this was published, most recently 5 (2024-12), 6 (2025-07), 7 (2026-07). Affects Runnable code.
Full Stack TypeScript App for Cloud Foundry - Sample RepositoryFull Stack TypeScript App for Cloud Foundry - Sample RepositoryA whole repository rather than a snippet: a CAP Node.js service and a freestyle SAPUI5 application, both in TypeScript, arranged for Cloud Foundry. The build process gets its own section, which is where a TypeScript full-stack project usually goes wrong.former_member66, published 2021-12-09
Full Stack TypeScript App for Cloud Foundry - Sample Repository
TypeScript patterns changed in @cap-js/cds-typer 0.5.0, 2023-07-25. Affects A recipe, Runnable code.
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
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.
Taking CAP to the next level - with TypeScriptTaking CAP to the next level - with TypeScriptThe author's own two packages introduced together, and they are two halves of one idea: cds2types generates TypeScript from the CDS model, cds-routing-handlers arranges the handlers that use them. Published in 2020, years before cds-typer, which makes it the earliest answer in the graph to a question the core answered later.published 2020-05-22
Taking CAP to the next level - with TypeScript
cds-routing-handlers: release and repository quiet for 46 months. 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
TypingSAP and community
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.
Draft handlingSAP and community
Custom Handlers for Entities in SAP CAPCustom Handlers for Entities in SAP CAPWritten from the moment of not knowing: a two-level composition with drafts, the Fiori elements UI working perfectly, and no idea which handlers are actually needed. What comes out is the action lifecycle laid out as a reference — NEW, EDIT, PATCH and the rest — with a matrix saying which handler fires for which, which is the thing the documentation leaves you to assemble.xavisanse, published 2026-02-20
How to ensure that users can efficiently enter data in SAP Fiori elements applicationsHow to ensure that users can efficiently enter data in SAP Fiori elements applicationsGuidance for draft-enabled Fiori Elements applications aimed at the user who spends their day in them: entering data quickly and by keyboard, on a slow network, without the round trips a draft-backed form can otherwise impose. Written from the design side rather than the implementation side, which is the half most CAP writing about drafts leaves out.published 2022-12-05
Messaging System for Transferring Error, Warning, and Information Messages from OData V4 Services to HTTP Client ApplicationsMessaging System for Transferring Error, Warning, and Information Messages from OData V4 Services to HTTP Client ApplicationsGetting a message out of a CAP service and onto a Fiori elements object page in a draft scenario — errors, warnings and information, each of which the UI treats differently. Co-written with one of the people on the OData side, and it spends its length on the message container rather than on the handler that fills it.arley-triana-morin, published 2022-08-11
Messaging System for Transferring Error, Warning, and Information Messages from OData V4 Services to HTTP Client Applications
OData changed in @cap-js-community/odata-v2-adapter 1.10.0, 2023-04-05. Affects A recipe, Runnable code.