How To Fix FL013 - Function module overwrites another function module

SAP Error Message - Details

• Message type: E = Error

• Message class: FL - Function Builder messages

• Message number: 013

• Message text: Function module overwrites another function module

What causes this issue?

You are trying to retrieve a function module from the version database.
This would result in an existing function module being deleted.

System Response

The system cannot retrieve the function module, since it can cause loss
of data.

How to fix this error?

Recreate the function module. In a separate session, call the version
management and display the required version of the function module. You
can then restore its interface from the comment lines of the source
code, as well as the source code itself, by using the copy and paste
functions in the editor.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FL013 - Function module overwrites another function module ?

  The SAP error message FL013, which states "Function module overwrites another function module," typically occurs when there are naming conflicts between function modules in the SAP system. This can happen when two function modules have the same name, leading to one function module overwriting the other. This situation can arise during transport requests, when importing objects from one system to another, or when developing custom function modules.
  Cause:
  
  Naming Conflicts: Two function modules with the same name exist in the same namespace or have been transported into the same system.
  Transport Issues: If a transport request contains a function module that has the same name as an existing one, it can lead to this error.
  Development Errors: Developers may inadvertently create function modules with duplicate names, especially in custom development.
  
  Solution:
  
  Rename Function Modules: If you have control over the function modules, consider renaming one of them to avoid the conflict. Ensure that the new name follows SAP naming conventions.
  Check Transport Requests: Review the transport requests to identify if a function module is being transported that conflicts with an existing one. You may need to adjust the transport request or exclude the conflicting function module.
  Namespace Management: Use proper namespaces for custom developments to avoid conflicts with standard SAP function modules. This helps in preventing naming collisions.
  Delete or Deactivate: If one of the function modules is not needed, you can delete or deactivate it, but ensure that this does not affect other parts of the system.
  Consult Documentation: Check SAP documentation or notes related to the specific function modules involved to see if there are any known issues or recommendations.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes that may provide additional insights or solutions for this specific error.
  Function Module Naming Conventions: Familiarize yourself with SAP's naming conventions for function modules to avoid future conflicts.
  Development Guidelines: Follow best practices for development in SAP to minimize the risk of naming conflicts, such as using unique prefixes for custom function modules.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or development team for further assistance.