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SAP ABAP RAP Interview Questions for 2026
Introduction
SAP ABAP RAP has become the standard development model for building modern SAP applications. As companies adopt clean core principles and cloud-ready architectures, RAP skills are now expected from SAP developers. Interviewers focus not only on theory but also on real understanding of RAP concepts, structure, and practical usage.
This article covers commonly asked SAP ABAP RAP interview questions for 2026, suitable for freshers, mid-level developers, and experienced professionals.
The questions are explained in simple language and focus on real interview expectations.
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Basic SAP ABAP RAP Interview Questions
Q1. What is SAP ABAP RAP?
SAP ABAP RAP is a modern programming model used to build business applications using ABAP. It follows a REST-based, service-oriented approach and supports clean separation of data, behavior, and service layers.
Q2. Why was RAP introduced?
RAP was introduced to support modern application development. It helps build scalable, maintainable, and cloud-ready ...
... applications aligned with SAP’s future strategy.
Q3. What are the main layers in RAP?
RAP consists of three main layers: Data model layer, behavior layer, and service exposure layer.
Q4. What is a Business Object in RAP?
A Business Object represents a real-world entity such as customer or order.
It combines data structure and behavior logic.
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CDS and Data Modeling Questions
Q5. What role do CDS views play in RAP?
CDS views define the data structure of RAP applications. They control fields, relationships, and annotations used by services and UI.
Q6. What is a projection view?
A projection view controls which fields are exposed to consumers. It helps hide internal data and maintain security.
Q7. What are annotations in CDS?
Annotations provide metadata. They control UI behavior, authorization, and service exposure.
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Behavior Definition Questions
Q8. What is a Behavior Definition?
Behavior Definition defines what operations are allowed on an entity.
It controls create, update, delete, actions, validations, and determinations.
Q9. What is the difference between managed and unmanaged behavior?
Managed behavior lets the framework handle standard operations automatically. Unmanaged behavior requires the developer to write full logic manually.
Q10. What are determinations in RAP?
Determinations are automatically triggered logic when data changes. They are used to calculate or update fields.
Q11. What are validations in RAP?
Validations check data correctness before save or action execution. They prevent invalid data from being persisted.
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Draft Handling Questions
Q12. What is draft handling in RAP?
Draft handling allows users to save incomplete data temporarily. It supports multi-user scenarios and improves user experience.
Q13. Why is draft handling important?
It prevents data loss and supports long-running transactions. Users can resume work without committing data immediately.
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Service Binding and OData Questions
Q14. What is service binding?
Service binding exposes RAP business objects as OData services. It connects the backend logic with UI or external systems.
Q15. What types of service bindings are used in RAP?
OData V2 and OData V4 bindings are commonly used.
Q16. How does RAP support REST principles?
RAP uses OData services, HTTP methods, and stateless communication.
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Fiori Integration Questions
Q17. How does RAP integrate with SAP Fiori?
RAP exposes OData services that Fiori Elements consume. UI is generated using CDS annotations.
Q18. Do RAP developers need deep Fiori knowledge?
No. Basic understanding of Fiori Elements and annotations is enough.
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Security and Authorization Questions
Q19. How is security handled in RAP?
Security is managed through CDS access control and service-level authorization.
Q20. What happens if authorization is missing?
Users may not see data or actions. In some cases, services may not work correctly.
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Debugging and Performance Questions
Q21. How do you debug RAP applications?
Debugging is done using ABAP Development Tools. You debug behavior implementations and service execution.
Q22. What causes performance issues in RAP?
Poor CDS design, unnecessary joins, and large data exposure can reduce performance.
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Scenario-Based Interview Questions
Q23. When would you choose unmanaged behavior?
When full control over database operations is required or when migrating legacy logic.
Q24. Can RAP work with on-premise systems?
Yes. RAP supports both on-premise and cloud environments.
Q25. What is the biggest advantage of RAP over classic ABAP?
Clean architecture, reusability, and easier integration with modern UI and services.
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Advanced RAP Interview Questions
Q26. What is clean core in RAP context?
Clean core avoids modifying standard SAP objects. RAP supports this by using extension and separation principles.
Q27. Can RAP be extended?
Yes. RAP supports extensions without changing original objects.
Q28. How does RAP support scalability?
Through structured data models, reusable logic, and service-based architecture.
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FAQs
Q1. What is SAP ABAP RAP mainly used for?
It is used to build modern, scalable SAP business applications using a clean and service-based approach.
Q2. Is SAP ABAP RAP difficult to learn?
It is easy to learn when you understand ABAP basics and practice step by step.
Q3. Do interviewers ask RAP questions for freshers?
Yes. Basic RAP concepts, CDS views, and architecture questions are common for freshers.
Q4. Is RAP required for SAP S/4HANA projects?
Most new SAP projects prefer RAP for clean core and future-ready development.
Q5. Where can beginners practice SAP ABAP RAP concepts?
Beginners can practice RAP concepts with guided examples and hands-on sessions provided by Visualpath.
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Conclusion
SAP ABAP RAP interviews in 2026 focus on concept clarity, architecture understanding, and real-world usage. Interviewers expect developers to understand RAP layers, CDS modeling, behavior logic, service exposure, and integration flow.
Preparing these questions thoroughly helps you answer confidently and demonstrate strong technical understanding. A clear grasp of RAP concepts not only helps in interviews but also ensures success in real project environments.

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