How To Fix RN106 - The old and new function modules have the same name

SAP Error Message - Details

• Message type: E = Error

• Message class: RN - Rename Tool message

• Message number: 106

• Message text: The old and new function modules have the same name

Self-Explanatory Message

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• What is the cause and solution for SAP error message RN106 - The old and new function modules have the same name ?

  The SAP error message RN106, which states "The old and new function modules have the same name," typically occurs during the process of modifying or activating function modules in the SAP system. This error indicates that there is a conflict between an existing function module and a new one that is being created or activated, as they share the same name.
  Cause:
  
  Name Conflict: The most common cause of this error is that a new function module is being created or activated with the same name as an existing function module. This can happen if a developer is trying to create a new version of a function module without properly renaming it.
  Transport Issues: If there are transport requests that include changes to function modules, and those changes are not properly managed, it can lead to conflicts.
  Development Environment: In a multi-developer environment, one developer might be working on a function module while another is trying to create or modify a function module with the same name.
  
  Solution:
  
  Check Existing Function Modules: Use transaction code SE37 (Function Builder) to check if a function module with the same name already exists. If it does, you may need to either rename the new function module or modify the existing one.
  Rename the New Function Module: If you are creating a new function module, ensure that it has a unique name. You can do this by appending a prefix or suffix to the name.
  Transport Management: If the issue arises from transport requests, ensure that all transports are correctly imported and that there are no pending changes that could cause conflicts.
  Version Management: If you are trying to activate a new version of an existing function module, ensure that the old version is properly deactivated or that you are working on the correct version.
  Check for Locks: Sometimes, the function module might be locked by another user or process. Check for locks using transaction SM12 and release them if necessary.
  
  Related Information:
  
  Function Module Naming Conventions: It's a good practice to follow naming conventions to avoid conflicts. For example, using a prefix that identifies the developer or project can help.
  Transport Organizer: Familiarize yourself with the transport organizer (transaction SE09/SE10) to manage transport requests effectively and avoid conflicts.
  SAP Notes: Check SAP Notes for any known issues or patches related to function module conflicts. You can search for relevant notes in the SAP Support Portal.
  Documentation: Always document changes made to function modules, especially in a team environment, to prevent conflicts and confusion.
  
  By following these steps, you should be able to resolve the RN106 error and prevent it from occurring in the future.