The SAP Integration Landscape: Technologies and Patterns

Keep this: job aid

Interface triage card

• For every interface, name four layers: business message, format, protocol, platform.
• Note the style: synchronous (caller waits) or asynchronous (message is stored and delivered later).
• IDoc: check status (53 posted, 51 not posted) and the posted document.
• OData: check the HTTP status code and the gateway error log.
• Platform in between? Start in its message monitor, then follow the message hop by hop.
• Asynchronous: test duplicates, backlogs and alert routing, not only the happy path.
• Synchronous: test response time at realistic volume and the caller's error handling.
• Prefer released APIs and events over direct table access.
• Record every interface decision: purpose, style, volume, technology, error handling, owner.