In the second round of technical interviews for an SAP ABAP Application Developer role, you can expect a range of questions designed to assess your deeper understanding of SAP ABAP and your problem-solving abilities. Here’s what you might encounter:

1. Advanced ABAP Concepts :

   • ABAP Data Dictionary : Questions may involve creating and managing database objects like tables, views, and indexes. You might be asked about data types, domain definitions, and custom table management.
   • Reports and Forms : Expect questions on developing complex ALV reports, interactive reports, and SAPscript or Smart Forms for printing. You might be asked to debug or optimize existing reports.

2. Performance Optimization :

   • Performance Tuning : Be prepared to discuss techniques for improving the performance of ABAP programs. This could involve indexing, optimizing SQL queries, and understanding the use of internal tables and buffering.

3. BAPI and BADIs :

   • Business Application Programming Interface (BAPI) : You might need to demonstrate your knowledge of creating and using BAPIs for integrating with other systems.
   • Business Add-Ins (BADIs) : Expect questions on implementing and managing BADIs to extend standard SAP functionalities.

4. Debugging and Troubleshooting :

   • Debugging : You could be asked to debug a given ABAP code snippet or troubleshoot issues in code. Familiarize yourself with debugging tools and techniques.

5. Real-World Scenarios :

   • Case Studies : You may be presented with real-world scenarios or problems where you need to propose or write ABAP code solutions. This could test your practical application of SAP knowledge.

Reviewing these areas and preparing to demonstrate your practical skills will help you succeed in the technical interview.