How To Fix FL621 - Invalid change to function group for function module &

SAP Error Message - Details

• Message type: E = Error

• Message class: FL - Function Builder messages

• Message number: 621

• Message text: Invalid change to function group for function module &

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FL621 - Invalid change to function group for function module & ?

  The SAP error message FL621, which states "Invalid change to function group for function module &", typically occurs when there is an attempt to modify a function module that is part of a function group in a way that is not allowed. This can happen in various scenarios, such as when trying to change the attributes of a function module or when the function module is locked or in use.
  Causes:
  
  Invalid Modifications: Attempting to change the function module's attributes (like its visibility or parameters) in a way that is not permitted.
  Locked Objects: The function module or its function group may be locked by another user or process, preventing changes.
  Transport Issues: If the function module is part of a transport request that is not yet released, it may lead to this error.
  Development Environment: Changes made in a development environment that are not properly synchronized with the transport system.
  
  Solutions:
  
  Check Locks: Use transaction code SM12 to check if the function module or its function group is locked by another user. If it is, you may need to wait for the lock to be released or contact the user holding the lock.
  Review Changes: Ensure that the changes you are trying to make to the function module are valid. Check the attributes and ensure they comply with SAP's guidelines for function modules.
  Transport Request: If the function module is part of a transport request, ensure that the request is released and that you are working in the correct environment (development, quality, production).
  Check Function Group: Verify that the function group associated with the function module is not in a state that prevents changes. You can check this in transaction SE80 or SE37.
  Use Correct Transactions: Make sure you are using the appropriate transactions for modifying function modules (like SE37 for function modules and SE80 for function groups).
  Consult Documentation: Refer to SAP documentation or notes related to function modules and function groups for any specific restrictions or guidelines.
  
  Related Information:
  
  Function Module: A reusable piece of code that can be called from other programs or function modules.
  Function Group: A container for function modules that share the same data and can be used together.
  Transaction Codes: Familiarize yourself with relevant transaction codes like SE37 (Function Module), SE80 (Object Navigator), and SM12 (Lock Entries) for managing and troubleshooting function modules.
  
  If the issue persists after trying the above solutions, consider reaching out to your SAP Basis or development team for further assistance, as they may have more insights into the specific configuration and state of your SAP system.