How To Fix /SAPAPO/RELH013 - Changes not allowed due to active customer exit

/SAPAPO/RELH013 - Overview

• Message type: E = Error

• Message class: /SAPAPO/RELH -

• Message number: 013

• Message text: Changes not allowed due to active customer exit

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.

Unfortunately, there isn't any extra information in this error notice.

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/SAPAPO/RELH013 - Details

• The SAP error message /SAPAPO/RELH013 Changes not allowed due to active customer exit typically occurs in the SAP Advanced Planning and Optimization (APO) module when a user attempts to make changes to a planning object (like a planning book or a data view) that is restricted by a customer exit. Customer exits are enhancements that allow customers to add their own functionality to standard SAP applications without modifying the original code.
  
  Cause:
  The error is triggered because there is an active customer exit that restricts changes to certain data or planning objects. This is often implemented to enforce business rules or to ensure data integrity. The specific customer exit may have been designed to prevent modifications under certain conditions, which could be related to the status of the planning object, user roles, or other business logic.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Identify the Customer Exit: 
  
  Check the documentation or