Building Transactional Apps with the ABAP RESTful Application Programming Model

Keep this: job aid

RAP app build and test checklist

• Model: root entity (define root view entity) plus children by composition; follow R_ / C_ / BP_ naming.
• BDEF: choose managed unless existing logic must save; set strict mode; map legacy field names.
• Fields: mark readonly and mandatory explicitly; test both.
• Validations fill failed and reported with clear, field-bound messages.
• Determinations are safe to rerun and never depend on each other’s order.
• Projection BDEF exposes only the operations this service needs.
• Bind transactional UI services as OData V4; enable draft for full Fiori elements support.
• Publish, then check the metadata and preview the app.
• Unit-test every handler with the RAP BO test double framework; add one EML save test and one OData test.
• Attach the evidence to the change before UAT.