How To Fix GG844 - Use source field & without a user exit once only

SAP Error Message - Details

• Message type: E = Error

• Message class: GG - Messages for FI-SL customizing

• Message number: 844

• Message text: Use source field & without a user exit once only

What causes this issue?

Source field &v1& is used in several places without a user exit and
without a consecutive number.
In set conversion, this will have the consequence that the sets from
source field &v1& are only converted to the target field of the same
name.
All other target fields of field &v1& will not be supplied with sets.

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?

Check your field movements for source field &v1&.
If you have not defined any sets for this field or the above situation
does not present a problem, you can start the conversion.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GG844 - Use source field & without a user exit once only ?

  The SAP error message GG844 ("Use source field & without a user exit once only") typically occurs in the context of data transfer or data processing within SAP, particularly when dealing with data extraction or transformation processes. This error indicates that a source field is being used in a way that is not compliant with the expected usage rules defined in the system.
  Cause:
  The error is usually caused by:
  
  Multiple User Exits: The source field is being referenced in multiple user exits or enhancements, which is not allowed. The system expects the source field to be used only once in a specific context.
  Incorrect Configuration: There may be a configuration issue where the source field is incorrectly set up or referenced in the data processing logic.
  Data Transfer Process: The error can also arise during data transfer processes (like LSMW, BAPIs, or IDocs) where the source field is being manipulated or accessed inappropriately.
  
  Solution:
  To resolve the GG844 error, you can take the following steps:
  
  
  Review User Exits: Check the user exits or enhancements that are associated with the data processing logic. Ensure that the source field is only being used in one user exit. If it is being used in multiple places, refactor the code to ensure it is only referenced once.
  
  
  Check Configuration: Verify the configuration settings related to the data transfer or processing. Ensure that the source field is correctly defined and that there are no conflicting settings.
  
  
  Debugging: If you have access to debugging tools, you can set breakpoints in the relevant user exits or processing logic to trace how the source field is being used. This can help identify where the conflict is occurring.
  
  
  Consult Documentation: Review SAP documentation or notes related to the specific transaction or process you are working with. There may be specific guidelines or best practices for using source fields in that context.
  
  
  SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance. They may have additional insights or patches that can resolve the issue.
  
  
  Related Information:
  
  User Exits: User exits are predefined points in the SAP standard code where you can add your own custom code. They are often used to enhance the functionality of standard SAP processes.
  Data Transfer Processes: Understanding the specific data transfer process you are working with (e.g., LSMW, BAPIs, IDocs) can provide context for how source fields are expected to be used.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide guidance on best practices for using source fields.
  
  By following these steps, you should be able to identify the cause of the GG844 error and implement a solution to resolve it.