How To Fix SLS_LO_GAF_EWB156 - Reference screen &1 does not exist in main program &2

SAP Error Message - Details

• Message type: E = Error

• Message class: SLS_LO_GAF_EWB - GAF Enh WB Msg for LO based FPM config sales UI

• Message number: 156

• Message text: Reference screen &1 does not exist in main program &2

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SLS_LO_GAF_EWB156 - Reference screen &1 does not exist in main program &2 ?

  The SAP error message SLS_LO_GAF_EWB156 indicates that a reference screen specified in the program does not exist in the main program. This typically occurs in the context of screen navigation or when trying to access a specific screen that has not been defined or is not available in the program being executed.
  Cause:
  
  Missing Screen Definition: The screen you are trying to access has not been defined in the main program.
  Incorrect Program Reference: The program might be incorrectly referencing a screen from another program or module.
  Transport Issues: If the program or screen was recently transported from a development environment to a production environment, there may have been issues during the transport process.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access certain screens.
  
  Solution:
  
  Check Screen Definition: Verify that the screen number referenced in the error message exists in the main program. You can do this by checking the screen definitions in the ABAP Workbench (transaction SE80 or SE38).
  Review Program Logic: Ensure that the program logic correctly references the intended screens. If the screen is part of a different program, you may need to adjust the references.
  Transport Check: If the issue arose after a transport, check the transport logs for any errors or missing objects. You may need to re-transport the relevant objects.
  Authorization Check: Ensure that the user has the necessary authorizations to access the screen. You can check this in transaction SU53 after the error occurs.
  Debugging: If you have access to the ABAP debugger, you can set breakpoints to see where the program is trying to access the screen and why it fails.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like SE80 (Object Navigator) or SE38 (ABAP Editor) to investigate the program and screen definitions.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Community Forums: Consider searching or posting on SAP community forums or sites like SAP Community or Stack Overflow for additional insights from other users who may have encountered the same issue.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution.