{"id":2316,"date":"2026-10-13T21:03:31","date_gmt":"2026-10-13T15:33:31","guid":{"rendered":"https:\/\/www.tiwaripedia.com\/index.php\/2026\/10\/13\/sap-abap-interview-questions\/"},"modified":"2026-10-13T21:18:23","modified_gmt":"2026-10-13T15:48:23","slug":"sap-abap-interview-questions","status":"publish","type":"post","link":"https:\/\/www.tiwaripedia.com\/index.php\/2026\/10\/13\/sap-abap-interview-questions\/","title":{"rendered":"SAP ABAP Interview Questions and Answers (ABAP on HANA, RAP and Clean Core)"},"content":{"rendered":"

Last updated: October 2026 \u00b7 3 min read<\/em><\/p>\n

ABAP is SAP’s programming language. Modern interviews test both classic ABAP and newer topics like CDS views, ABAP on HANA, the RESTful Application Programming Model (RAP) and clean-core extensibility. Here are the questions you are most likely to face.<\/p>\n

\"Infographic:
SAP ABAP Interview Questions and Answers (ABAP on HANA, RAP and Clean Core) \u2013 infographic by Tiwaripedia<\/figcaption><\/figure>\n

Classic ABAP essentials<\/h2>\n
Topic<\/th>Key points<\/th><\/tr><\/thead>
Data Dictionary (SE11)<\/td>Tables, views, data elements, domains, search helps, lock objects<\/td><\/tr>
Internal tables<\/td>Standard, sorted and hashed; work areas; field symbols<\/td><\/tr>
Reports<\/td>Classical, interactive, ALV<\/td><\/tr>
Modularisation<\/td>Subroutines (obsolete), function modules, methods<\/td><\/tr>
Dialog programming<\/td>Screens, PBO\/PAI, module pool<\/td><\/tr>
Forms<\/td>SmartForms, Adobe Forms<\/td><\/tr>
Data transfer<\/td>BDC, LSMW (legacy), BAPIs, migration cockpit<\/td><\/tr><\/tbody><\/table><\/figure>\n

Top interview questions and answers<\/h2>\n

1. Difference between standard, sorted and hashed internal tables?<\/h3>

Standard tables use index access and linear search; sorted tables keep a sorted key with binary search; hashed tables use a unique key with constant-time access, ideal for large lookups.<\/p>

2. What is a BAPI?<\/h3>

A Business Application Programming Interface: a standard, RFC-enabled function module of a business object, used for integrations such as creating sales orders.<\/p>

3. User exit vs customer exit vs BAdI vs enhancement point?<\/h3>

User exits are old includes in SD; customer exits use SMOD\/CMOD; BAdIs are object-oriented enhancements (classic and new kernel BAdIs); implicit and explicit enhancement points allow code insertion without modification.<\/p>

4. What are CDS views?<\/h3>

Core Data Services views define data models on the database with annotations for analytics, OData and UI. They push logic down to SAP HANA (code-to-data).<\/p>

5. What is AMDP?<\/h3>

ABAP Managed Database Procedures let you write SQLScript inside ABAP classes for complex HANA-side processing.<\/p>

6. What is RAP?<\/h3>

The ABAP RESTful Application Programming Model for building Fiori apps and APIs using CDS, behaviour definitions and service bindings, in S\/4HANA and SAP BTP ABAP Environment.<\/p>

7. What does clean core mean?<\/h3>

Keeping the SAP standard core unmodified and building extensions using released APIs, key-user tools and side-by-side extensions on BTP, so upgrades stay easy.<\/p>

8. How do you improve performance in ABAP on HANA?<\/h3>

Use Open SQL with field lists and WHERE clauses, avoid SELECT in loops, use FOR ALL ENTRIES carefully or joins, use CDS\/AMDP for heavy logic, and check with SQL Monitor and SAT.<\/p>

9. What is the difference between SAP memory and ABAP memory?<\/h3>

SAP memory (SET\/GET PARAMETER) is shared across sessions of a user; ABAP memory (EXPORT\/IMPORT) is shared within a call sequence in one session.<\/p>

10. What are ABAP Unit tests?<\/h3>

Test classes inside programs that verify methods automatically, part of quality checks with ATC.<\/p>\n

Test yourself: scored ABAP quiz<\/h2>\n
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Interview tips<\/h2>\n