APP400 No-Code Application Development with SAP Build Apps — Lesson 3: OData, REST APIs, Authentication, Data Resources, and Business Logic

Learning Objectives

• Explain the SAP structures, data, settings, roles, and dependencies governing data-resource and API integration.
• Perform and validate authentication and business logic using reviewable system evidence.
• Evaluate the condition where an application works in preview but fails after deployment because authentication and data-resource settings differ and select proportionate corrective action.

Detailed Topics

• OData applied to the course scenario, expected SAP behavior, dependencies, and evidence.
• REST APIs applied to the course scenario, expected SAP behavior, dependencies, and evidence.
• Authentication applied to the course scenario, expected SAP behavior, dependencies, and evidence.
• Data Resources applied to the course scenario, expected SAP behavior, dependencies, and evidence.
• and Business Logic applied to the course scenario, expected SAP behavior, dependencies, and evidence.

Instructor Demonstration

The instructor traces a citizen-development team delivering a governed mobile and web application without sacrificing usability or data protection. The walkthrough connects navigation, configuration or process logic, system messages, and evidence captured in the SAP Build Apps application design and release dossier. It also tests the exception where an application works in preview but fails after deployment because authentication and data-resource settings differ.

Hands-On Exercise

Complete a controlled SAP exercise covering OData, REST APIs, Authentication, Data Resources, and Business Logic and preserve the verified result in the SAP Build Apps application design and release dossier.

1. Confirm scope, prerequisites, master data, roles, dependencies, and acceptance criteria.
2. Execute the workflow while recording settings, transactions, outputs, and system messages.
3. Test normal behavior, one boundary condition, and the stated exception.
4. Document corrections, evidence, ownership, retest criteria, and handover actions.

Scenario Analysis

• Identify which object, rule, setting, or process step most strongly influences data-resource and API integration.
• Compare two defensible responses and explain business, technical, control, and support trade-offs.
• Determine how the SAP Build Apps application design and release dossier should be approved, retained, retested, and updated.

Troubleshooting Guidance

Start where expected SAP behavior first differs from the observed result. Check master data, configuration sequence, authorization, integration, status, and transaction evidence separately. Treat “an application works in preview but fails after deployment because authentication and data-resource settings differ” as a hypothesis until system settings, logs, documents, and outcomes confirm the cause.

Validation Checklist

• Required SAP structures, master data, roles, settings, and dependencies are present.
• The SAP Build Apps application design and release dossier connects each conclusion to objective, reviewable evidence.
• Normal processing, the boundary condition, integration behavior, and exception were tested.
• Corrections, ownership, retest criteria, documentation, and operational handover are complete.

Lesson Outcome

Learners can apply OData, REST APIs, Authentication, Data Resources, and Business Logic, explain the resulting SAP behavior, and defend the outcome through the SAP Build Apps application design and release dossier.