How To Fix 0K521 - Program & for layout & not the same as callback program &

0K521 - Overview

• Message type: E = Error

• Message class: 0K - Messages for "General List Modules"

• Message number: 521

• Message text: Program & for layout & not the same as callback program &

What causes this issue?

The callback program is not the same as the reference program for the
display variant in the IS_VARIANT structure.
This call combination should only be used in justified exceptional
cases.

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.

0K521 - Details

• The SAP error message 0K521 typically indicates a mismatch between the layout and the callback program in a report or transaction. This error often arises when there is an inconsistency in the configuration of the report layout or when the layout is not properly associated with the program that is supposed to generate it.
  
  Cause:
  
  Mismatch in Layout and Program: The layout you are trying to use is not correctly linked to the program that is generating the report.
  Changes in Layout: If the layout has been modified or if a new layout has been created without properly linking it to the corresponding program.
  Transport Issues: If the layout was transported from one system to another (e.g., from development to production) and the associated program was not transported or updated accordingly.
  User Authorization: Sometimes, the user may not have the necessary authorizations to access the layout or the program.
  
  
  Solution:
  
  
  Check Layout Assignment: Verify that the layout