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Real-Time Architecture in SAP CAP: Mastering Asynchronous Jobs, Gateways with WebSocketsReal-Time Architecture in SAP CAP: Mastering Asynchronous Jobs, Gateways with WebSocketsThe other half of the author's own industrial-data post: mass ingestion is only useful if the screen keeps up, so background jobs push progress to the UI over WebSockets instead of the user reloading. Written from a mission-critical case rather than a demo.rgadirov, published 2026-03-12
Real-Time Architecture in SAP CAP: Mastering Asynchronous Jobs, Gateways with WebSockets
Async processing changed in @sap/cds 10.0, 2026-07-02. Affects A recipe.
Connect SAP CAP (Node.js) to On-Premise/Private PostgreSQL using SAP Cloud ConnectorConnect SAP CAP (Node.js) to On-Premise/Private PostgreSQL using SAP Cloud ConnectorAn end-to-end route from a CAP Node.js application on Cloud Foundry to a PostgreSQL database that is never made publicly reachable, over BTP Connectivity and the Cloud Connector using a TCP destination and SOCKS5. The part worth having is that it covers the deployer as well as the server: the generated PostgreSQL deployer has to reach the same private database to deploy the CDS model, and a guide that only connects the runtime leaves you with a schema you cannot install.Kalaikovan, published 2026-08-07
Connect SAP CAP (Node.js) to On-Premise/Private PostgreSQL using SAP Cloud Connector
Database connectors changed in @sap/cds 10.1.0, 2026-09-07. Affects A recipe.
Consume Remote Services in a Full-Stack CAP ApplicationConsume Remote Services in a Full-Stack CAP ApplicationExtending the Developer's Guide application with a remote S/4HANA service — connectivity, importing the Business Partner API, and running against it. SAP publishes this as four separate paths: mock server or real S/4HANA Cloud, times Cloud Foundry or Kyma. One entry covers all four, because the difference between them is which backend and which runtime, not what you learn.SAP
Consume SOAP Web Services in SAP Cloud Application Programming ModelConsume SOAP Web Services in SAP Cloud Application Programming ModelCalling a SOAP service from CAP — the case the remote-service story does not cover, since CAP's own import path speaks OData and OpenAPI.SAP
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
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 the SAP Cloud Application Programming ModelExtend SAP SuccessFactors on SAP BTP with the SAP Cloud Application Programming ModelTwelve tutorials, about two hours, building a side-by-side extension of SuccessFactors on BTP. The spine is remote services: importing the SuccessFactors OData service definitions into a CAP model, then treating them as entities the extension reads and writes through, rather than as an API called from a handler. Indexed as one entry because the parts only make sense in order.SAP
Extending SAP Sales and Service Cloud V2 Using CAPExtending SAP Sales and Service Cloud V2 Using CAPAn extension target that does not run on BTP at all — Sales and Service Cloud V2 sits directly on hyperscalers — so the separation between core and extension is enforced rather than encouraged. That constraint is what makes the post worth reading.Quablab, published 2025-07-09
How to Access On-premise OData from the Business Application Studio - CAPM DevelopmentHow to Access On-premise OData from the Business Application Studio - CAPM DevelopmentA destination-naming constraint found the hard way and then corrected in public: the post carries its own update saying that with a CAPM app, a standard destination works through the studio's proxy as long as the name matches [a-z0-9-]. The update credits a comment on the post, so the correction and its source are both in the record.laszlo_kajan2, published 2020-06-02
How to Access On-premise OData from the Business Application Studio - CAPM Development
Destinations changed in @sap-cloud-sdk/connectivity 4.0.0, 2025-03-04. Affects A recipe, Runnable code.
Part 1: How to build an extension application for SAP S/4HANA Cloud using CAP, SAP Cloud SDK and SAP Fiori elementsPart 1: How to build an extension application for SAP S/4HANA Cloud using CAP, SAP Cloud SDK and SAP Fiori elementsThe substantial part of a side-by-side extensibility series: CAP Node.js, Cloud SDK and Fiori elements against S/4HANA Cloud. Eighteen thousand characters, and the one to read if you only read one.former_member748, published 2020-12-01
Part 1: How to build an extension application for SAP S/4HANA Cloud using CAP, SAP Cloud SDK and SAP Fiori elements
Fiori annotations changed in @sap/cds-dk 9.6.0, 2025-12-17. Affects A recipe, Runnable code.
Part 2: How to build an extension application for SAP S/4HANA Cloud using CAP, SAP Cloud SDK and SAP Fiori elementsPart 2: How to build an extension application for SAP S/4HANA Cloud using CAP, SAP Cloud SDK and SAP Fiori elementsThe second part, continuing the same extension. Opens with a recap of the stack rather than of the steps, which makes it readable on its own.former_member748, published 2020-12-20
Part 2: How to build an extension application for SAP S/4HANA Cloud using CAP, SAP Cloud SDK and SAP Fiori elements
Fiori annotations changed in @sap/cds-dk 9.6.0, 2025-12-17. Affects A recipe, Runnable code.
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 CAP Remote Services & SAP Fiori ElementsSAP CAP Remote Services & SAP Fiori ElementsWhat happens to a generated UI when the data is not local: a CAP service projecting a remote one, with Fiori elements on top. The author explored it to find out where the abstraction holds, which is the useful register for this.Former Member, published 2021-05-20
SAP CAP Remote Services & SAP Fiori Elements
Fiori annotations changed in @sap/cds-dk 9.6.0, 2025-12-17. Affects A recipe, Runnable code.
SAP Cloud Application Programming Model: Deep Insert (4) Consume Remote ServiceSAP Cloud Application Programming Model: Deep Insert (4) Consume Remote ServiceFourth in a long series on deep insert, and the one where the target stops being local. Twenty thousand characters, project files linked, and the earlier parts on UUIDs and multi-level structures are prerequisites the author names.CarlosRoggan, published 2019-07-24
SAP Cloud Application Programming Model: Deep Insert (4) Consume Remote Service
Destinations changed in @sap-cloud-sdk/connectivity 4.0.0, 2025-03-04. Affects A recipe, 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.
Use the SAP Cloud SDK in the SAP Cloud Application Programming ModelUse the SAP Cloud SDK in the SAP Cloud Application Programming ModelReaching for the Cloud SDK from inside a CAP service, for the calls CAP's own remote services do not make.SAP
[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.
Complete Guide: Setting Up CAP Plugin for Advanced Event Mesh with OAuth AuthenticationComplete Guide: Setting Up CAP Plugin for Advanced Event Mesh with OAuth AuthenticationWritten because the plugin's own documentation stops short of the prerequisites and the author had to assemble them from three other sources and a help chapter. It joins them: the OIDC application in Identity Authentication, the OAuth profile in Broker Manager, the token checked before anything is wired, and only then the plugin. The author says plainly it came out of trial and error and was going to be a README.rpagni, published 2025-11-10
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 Architecture with Event Mesh – Part-2Event Driven Architecture with Event Mesh – Part-2Part 1 published a message and stopped there; this closes the loop by giving it somewhere to go. A REST API built in Integration Suite is registered as a webhook on the Event Mesh queue, and the chain is run end to end — CAP to Event Mesh to Integration Suite to Twilio — so the consumer side and the webhook configuration are what this adds.Avinash_Vaidya, published 2023-01-30
Event Driven Architecture with Event Mesh – Part-2
Event Mesh changed in @sap/cds 10.0.3, 2026-07-02. Affects A recipe, Runnable code.
Implementing Event-Driven Architecture in CAP Java using SAP Event MeshImplementing Event-Driven Architecture in CAP Java using SAP Event MeshPublish and consume from the Java stack, which most of the Event Mesh writing on the community does not cover. The MTA declaration and the credentials come first, then the emit and the handler, then the two sections that make it worth keeping: error handling with retries, and securing the events with OAuth.Soumya-Pirlamarla, published 2025-11-26
Implementing Event-Driven Architecture in CAP Java using SAP Event Mesh
Event Mesh changed in @sap/cds 10.0.3, 2026-07-02. Affects A recipe.
Publish events from CAP Node.js applications to Event Mesh of Integration SuitePublish events from CAP Node.js applications to Event Mesh of Integration SuiteThe smallest complete example: cds init, a service with one function, cds.connect.to('messaging') and an emit to a topic. Deliberately scoped — the Event Mesh setup is skipped and the subaccount is assumed to be the same one — so what remains is the handful of lines on the CAP side and the binding that makes them reach the broker.KevinWang_ST_Consultancy, published 2026-02-13
Publish events from CAP Node.js applications to Event Mesh of Integration Suite
Event Mesh changed in @sap/cds 10.0.3, 2026-07-02. Affects A recipe.
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.
Using Apache Kafka for messaging in the SAP Cloud Application Programming Model (CAP) – Part 2/2Using Apache Kafka for messaging in the SAP Cloud Application Programming Model (CAP) – Part 2/2The practical half: concrete use cases for cds-kafka, running locally and on BTP. It opens by placing the plugin among SAP's own event-driven offerings rather than beside them, which is the part that decides whether you reach for this or for Event Mesh — a comparison a plugin's own README rarely makes about itself.published 2025-01-13
Build an integration scenario from scratch with AI assistance at every stepBuild an integration scenario from scratch with AI assistance at every stepBuilds an integration scenario in SAP Integration Suite from nothing and takes it through design, deployment, optimisation, monitoring and resolution with AI assistance at each step, which is the Integration flows concern worked end to end. The abstract names the phases and the kinds of help, development, analysis, troubleshooting and continuous improvement, and no feature or tool that gives them. A TechEd 2026 hands-on session (Tuesday 27 October, Berlin), presented by Craig Stasila, Finny Babu, Prashant Gautam and Shilpa Vij, written here from SAP's abstract; the recording is not yet published.
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.
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 SAP Overview Page using SAP HANA Cloud & SAP CAP service annotations in Visual Studio CodeBuild SAP Overview Page using SAP HANA Cloud & SAP CAP service annotations in Visual Studio CodeAn Overview Page — the card-based Fiori elements floorplan, less written about than the list report — driven entirely from annotations on a CAP service, in VS Code rather than Business Application Studio.Sai_Nithesh_G, published 2021-08-05
Build SAP Overview Page using SAP HANA Cloud & SAP CAP service annotations in Visual Studio Code
Fiori annotations changed in @sap/cds-dk 9.6.0, 2025-12-17. Affects A recipe, Runnable code.
Building an Analytical List Page with CAP OData V4Building an Analytical List Page with CAP OData V4The annotations a CAP OData V4 service needs before an Analytical List Page will render — the write-up behind the cap-alp sample indexed here. Candid about its provenance: the author credits a GitHub repository she found the approach in, and notes that the repository is no longer available, which is the whole argument for indexing the reasoning rather than only linking the code.published 2023-06-12
Building an Analytical List Page with CAP OData V4
cap-alp: no published releases, repository quiet for 24 months. Affects A recipe, Runnable code.
CAP - Dynamically hide UI facets in Fiori ElementsCAP - Dynamically hide UI facets in Fiori ElementsFacets hidden at runtime rather than at design time, which needs two things at once: UI.Hidden on the annotation side and a virtual element on the CDS side to decide it. Both are linked from the post, and it is barely two pages.AjayRathore, published 2023-12-08
CAP - Dynamically hide UI facets in Fiori Elements
Fiori annotations changed in @sap/cds-dk 9.6.0, 2025-12-17. Affects A recipe.
CAP with Fiori Elements: Actions on List Report / Object Page using Annotations - Part1CAP with Fiori Elements: Actions on List Report / Object Page using Annotations - Part1Actions on their own, at length — where an action can be placed, what the annotation looks like for each position, and what changes between the List Report and the Object Page. Part one of two.Ajit_K_Panda, published 2023-12-31
CAP with Fiori Elements: Actions on List Report / Object Page using Annotations - Part1
Fiori annotations changed in @sap/cds-dk 9.6.0, 2025-12-17. Affects A recipe, Runnable code.
Deep Insert in SAP CAPM Using Composition and Fiori ElementsDeep Insert in SAP CAPM Using Composition and Fiori ElementsParent and children created in one transaction, which composition already gives you in the model — the post is about what Fiori elements does with it, and what the payload looks like when the UI sends both at once.published 2026-05-22
Develop a Full-Stack CAP Application Following SAP BTP Developer's GuideDevelop a Full-Stack CAP Application Following SAP BTP Developer's GuideThe eight-part path SAP's own Developer's Guide prescribes: a CAP service, Fiori Elements over it, custom logic, authorization, tests, and the preparation deployment needs. It is the closest thing to an official answer to 'what does a whole CAP application look like', which is why it sits under reference applications rather than under any one of the capabilities it touches.SAP
Developing a Fiori elements app with CAP and Fiori ToolsDeveloping a Fiori elements app with CAP and Fiori ToolsA learning write-up from someone new to CAP at the time, and long enough to be thorough. Carries its own update pointing at a newer post on deploying a CAP-based Fiori app to a central launchpad without an approuter.MioYasutake, published 2020-09-07
Developing a Fiori elements app with CAP and Fiori Tools
Fiori annotations changed in @sap/cds-dk 9.6.0, 2025-12-17. Affects A recipe, Runnable code.
Developing Fiori Element Application (List Report and Object Page) consuming the OData service created using SAP Cloud Application Programming modelDeveloping Fiori Element Application (List Report and Object Page) consuming the OData service created using SAP Cloud Application Programming modelOne of the earliest entries here, from mid-2020: the List Report and Object Page pair generated over a CAP OData service, when that combination was still new enough to need explaining.former_member187069, published 2020-06-08
Developing Fiori Element Application (List Report and Object Page) consuming the OData service created using SAP Cloud Application Programming model
Fiori annotations changed in @sap/cds-dk 9.6.0, 2025-12-17. Affects A recipe.
Developing SAP Fiori Element application by using SAP Cloud Application Programming ModelDeveloping SAP Fiori Element application by using SAP Cloud Application Programming ModelThe long version, and it starts by naming the floorplans — List Report, Worklist, Object Page, Overview Page, Analytical List Page — which is the decision most walkthroughs skip. Then one of them, built out against a CAP service.shobhit, published 2023-08-07
Developing SAP Fiori Element application by using SAP Cloud Application Programming Model
Fiori annotations changed in @sap/cds-dk 9.6.0, 2025-12-17. Affects A recipe, Runnable code.
Dynamic Criticality in SAP CAP Using Fiori Elements and Node.jsDynamic Criticality in SAP CAP Using Fiori Elements and Node.jsColouring rows by status, which sounds like a UI question and is not: criticality is a value the service has to compute and expose, so the work is a virtual element in CDS and the annotation that points at it. Comes from a real requirement — business users wanting to spot the records that need attention.Pranesh_SD, published 2026-06-05
Fiori Elements のList Reportアプリにカスタムアクションボタンを追加し、カスタムコントローラーを用いてアイコン化するFiori Elements のList Reportアプリにカスタムアクションボタンを追加し、カスタムコントローラーを用いてアイコン化するIn Japanese. A custom action button added to a generated List Report and then given an SAPUI5 icon through a custom controller — the point where an annotation-driven app needs a piece of code, and what that costs.takayuki_tanaka, published 2024-08-02
Part 1: How to build an extension application for SAP S/4HANA Cloud using CAP, SAP Cloud SDK and SAP Fiori elementsPart 1: How to build an extension application for SAP S/4HANA Cloud using CAP, SAP Cloud SDK and SAP Fiori elementsThe substantial part of a side-by-side extensibility series: CAP Node.js, Cloud SDK and Fiori elements against S/4HANA Cloud. Eighteen thousand characters, and the one to read if you only read one.former_member748, published 2020-12-01
Part 1: How to build an extension application for SAP S/4HANA Cloud using CAP, SAP Cloud SDK and SAP Fiori elements
Fiori annotations changed in @sap/cds-dk 9.6.0, 2025-12-17. Affects A recipe, Runnable code.
Part 2: How to build an extension application for SAP S/4HANA Cloud using CAP, SAP Cloud SDK and SAP Fiori elementsPart 2: How to build an extension application for SAP S/4HANA Cloud using CAP, SAP Cloud SDK and SAP Fiori elementsThe second part, continuing the same extension. Opens with a recap of the stack rather than of the steps, which makes it readable on its own.former_member748, published 2020-12-20
Part 2: How to build an extension application for SAP S/4HANA Cloud using CAP, SAP Cloud SDK and SAP Fiori elements
Fiori annotations changed in @sap/cds-dk 9.6.0, 2025-12-17. Affects A recipe, Runnable code.
SAP CAP Remote Services & SAP Fiori ElementsSAP CAP Remote Services & SAP Fiori ElementsWhat happens to a generated UI when the data is not local: a CAP service projecting a remote one, with Fiori elements on top. The author explored it to find out where the abstraction holds, which is the useful register for this.Former Member, published 2021-05-20
SAP CAP Remote Services & SAP Fiori Elements
Fiori annotations changed in @sap/cds-dk 9.6.0, 2025-12-17. Affects A recipe, Runnable code.