How To Fix GU728 - No valid user exit specified

SAP Error Message - Details

• Message type: E = Error

• Message class: GU - FI-SL utilities

• Message number: 728

• Message text: No valid user exit specified

What causes this issue?

If you want to enter a master data exit for a field, this exit must
have the form =xx, where xx is a two-digit number.
The user exit itself must exist as an include in the program SAPLGUMD.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GU728 - No valid user exit specified ?

  The SAP error message GU728 "No valid user exit specified" typically occurs when the system is unable to find a valid user exit for a particular process or transaction. User exits are predefined points in the SAP code where you can add custom code to enhance or modify the standard functionality without modifying the original SAP code.
  Causes:
  
  Missing User Exit: The specified user exit does not exist or is not activated in the system.
  Incorrect Configuration: The configuration for the user exit may be incorrect or incomplete.
  Authorization Issues: The user may not have the necessary authorizations to access the user exit.
  Custom Code Issues: If there is custom code associated with the user exit, it may contain errors or may not be properly implemented.
  Transport Issues: If the user exit was transported from another system, it may not have been transported correctly.
  
  Solutions:
  
  
  Check User Exit Availability: Verify that the user exit you are trying to use is available in your system. You can do this by checking the relevant documentation or using transaction codes like SMOD (for enhancements) or CMOD (for projects).
  
  
  Activate User Exit: If the user exit exists but is not activated, you may need to activate it using transaction SMOD.
  
  
  Review Configuration: Ensure that the configuration for the user exit is correct. This may involve checking the settings in the relevant customizing transactions.
  
  
  Check Authorizations: Ensure that the user has the necessary authorizations to access the user exit. You can check this using transaction SU53 after the error occurs.
  
  
  Debug Custom Code: If there is custom code associated with the user exit, debug it to identify any issues. You can use transaction SE80 or SE38 to access and modify the code.
  
  
  Transport Check: If the user exit was transported from another system, check the transport logs to ensure that it was transported correctly and that all necessary objects are included.
  
  
  Consult Documentation: Refer to SAP documentation or community forums for specific guidance related to the user exit you are working with.
  
  
  Related Information:
  
  User Exits: User exits are part of the SAP enhancement framework, which allows for the addition of custom functionality.
  Enhancement Spots: In newer versions of SAP, enhancement spots may be used instead of user exits. Check if the functionality you need can be implemented using enhancement spots.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to the user exit in question.
  
  If the problem persists after trying the above solutions, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.