How To Fix KG391 - Exit number &1 does not exist -> check your entry

KG391 - Overview

• Message type: E = Error

• Message class: KG - CO-PA Planning

• Message number: 391

• Message text: Exit number &1 does not exist -> check your entry

What causes this issue?

The exit number &V1& has not yet been defined.

System Response

The exit number is needed in customer enhancement COPA0006, which can
be used to define company-specific planning functions.

How to fix this error?

Press F4 to display a list of possible entries, or see the
documentation on customer enhancement COPA0006 to create your own
planning function.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KG391 - Exit number &1 does not exist -> check your entry ?

  The SAP error message KG391, which states "Exit number &1 does not exist -> check your entry," typically occurs in the context of the SAP Controlling (CO) module, particularly when dealing with user exits or enhancements in the system. This error indicates that the system is trying to call a user exit that has not been defined or does not exist in the system.
  
  Cause:
  
  Non-existent User Exit: The exit number specified in the error message does not correspond to any user exit defined in the system.
  Incorrect Configuration: The configuration settings may be pointing to an incorrect exit number.
  Transport Issues: If the user exit was recently transported from another system, it may not have been properly imported or activated.
  Custom Development: If there is custom code that references a user exit, it may be incorrectly coded or the exit may not have been implemented.
  
  
  Solution:
  
  Check Exit Number: Verify the exit number mentioned in the