How To Fix AFX_GENERATION109 - The source code for function module &1 already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: AFX_GENERATION - Messages From Generation

• Message number: 109

• Message text: The source code for function module &1 already exists

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message AFX_GENERATION109 - The source code for function module &1 already exists ?

  The SAP error message AFX_GENERATION109 indicates that there is an attempt to generate or create a function module that already exists in the system. This typically occurs during the development or modification of function modules in the ABAP Workbench.
  Cause:
  
  Duplicate Function Module: The function module you are trying to create or generate already exists in the system with the same name.
  Transport Issues: If you are working in a transport environment, there may be inconsistencies between the development and production systems.
  Development Objects: Sometimes, the error can occur if there are issues with the development objects or if the function module is being modified while another user is also trying to access it.
  
  Solution:
  
  
  Check for Existing Function Module:
  
  Use transaction SE37 (Function Builder) to search for the function module by name. If it exists, you may need to modify it instead of creating a new one.
  
  
  
  Rename the Function Module:
  
  If you need to create a new function module, consider renaming it to avoid conflicts with the existing one.
  
  
  
  Transport Management:
  
  If you suspect transport issues, check the transport logs and ensure that all transports are correctly imported and that there are no inconsistencies.
  
  
  
  Lock Management:
  
  Check if the function module is locked by another user. You can use transaction SM12 to view and manage locks.
  
  
  
  Clear Buffer:
  
  Sometimes, clearing the buffer can help. You can do this using transaction SE38 and running the report RS_ABAP_SOURCE_SCAN.
  
  
  
  Check for Syntax Errors:
  
  Ensure that there are no syntax errors in the function module that could be causing the generation to fail.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SE37: Function Builder
  SE80: Object Navigator
  SM12: Display and Delete Locks
  SE38: ABAP Editor
  
  
  
  Documentation: Refer to SAP Help documentation for more details on function modules and their management.
  
  
  SAP Notes: Check for any relevant SAP Notes that might address specific issues related to function module generation.
  
  
  If the problem persists after trying the above solutions, consider reaching out to your SAP Basis or ABAP development team for further assistance.