SAP Reference
The SAP API reference resources, principally the SAP Business Accelerator Hub, are where you find, understand and try SAP’s released APIs. Knowing how to use them turns integration from guesswork into a documented process.
The SAP Business Accelerator Hub is the catalogue of released APIs across S/4HANA, the cloud products and BTP, with endpoints, entity documentation, authentication requirements and a sandbox to try calls. Prefer released APIs; internal interfaces change without notice. In the system, /IWFND/MAINT_SERVICE lists OData services, the BAPI transaction browses BAPIs and WE60 documents IDocs.
- Watch out: Using internal/unreleased interfaces that may change.
The SAP Business Accelerator Hub
The hub (formerly SAP API Business Hub) publishes SAP’s released APIs across S/4HANA, cloud products and BTP, with documentation, schemas, and interactive "try-it-out" testing. It is the authoritative catalogue of what is available and how to call it.
What you find there
- OData and SOAP API definitions and endpoints.
- Field/entity documentation and query capabilities.
- Authentication requirements and scopes.
- Sandbox testing and code snippets.
Released vs custom
Prefer released, documented APIs from the hub: they are stable, supported and clean-core-compliant, unlike internal/unreleased interfaces that can change without notice. For S/4HANA especially, using released APIs is key to smooth upgrades and cloud readiness.
Beyond the hub
In-system, reference tools help too, /IWFND/MAINT_SERVICE for OData services, BAPI Explorer (BAPI transaction) for BAPIs, and WE60 for IDoc documentation. Together they let you discover and understand the right interface for any integration.
Common pitfalls
- Using internal/unreleased interfaces that may change.
- Not checking the hub for a released API first.
- Ignoring documented auth/scopes.