RAP (RESTful ABAP Programming Model)

Guide for building transactional applications using the ABAP RESTful Application Programming Model (RAP) in ABAP Cloud.

Clean core context: RAP is the leading programming model for ABAP Cloud development, which is clean core Level A. A custom RAP-based Fiori app for the core SAP Cloud ERP scope is Level A; extending a RAP-based SAP Fiori app via released extension points is also Level A. By contrast, SEGW/BOPF/UI5-based apps and their extensions are Level B. Keep RAP handler code restricted to released APIs to stay at Level A — a single internal object call demotes the whole application to Level C. See the abap-cloud skill for level details.

Workflow

1. Determine the user's goal:
   • Creating a new RAP BO from scratch
   • Adding behavior (actions, validations, determinations) to an existing BO
   • Writing EML statements to consume a RAP BO
   • Troubleshooting RAP-related issues
   • Understanding RAP concepts