This lesson develops controlled execution of Services, Events, Custom Handlers, Validation, and Business Logic. The work is grounded in a BTP development team creating a service-oriented business application that must preserve domain rules, authorization boundaries, deployment repeatability, and operational supportability and contributes directly to maintainable SAP CAP applications.
Using the scenario, the instructor demonstrates service definitions, event lifecycle, custom handlers, business validation and highlights object relationships, determination behavior, integration effects, and approval evidence. The demonstration deliberately introduces the exception where a custom handler bypasses standard validation during an update request.
Complete a controlled activity covering service definitions, event lifecycle, custom handlers, business validation and preserve the result in service behavior and handler evidence pack.
Start at the earliest point where expected behavior differs from the observed result. Review process sequence, relevant data, configuration, authorization, integration, and timing as separate hypotheses. Treat “a custom handler bypasses standard validation during an update request” as unconfirmed until settings, documents, logs, reports, and focused retesting support the cause.
Learners can apply Services, Events, Custom Handlers, Validation, and Business Logic, explain the resulting SAP behavior, and defend the outcome through service behavior and handler evidence pack.