How To Fix /SAPAPO/OPT009 - Customizing data is locked by user &1

/SAPAPO/OPT009 - Overview

• Message type: E = Error

• Message class: /SAPAPO/OPT -

• Message number: 009

• Message text: Customizing data is locked by user &1

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 /SAPAPO/OPT009 - Customizing data is locked by user &1 ?

  The SAP error message /SAPAPO/OPT009 Customizing data is locked by user &1 typically occurs in the SAP Advanced Planning and Optimization (APO) module when a user tries to access or modify customizing data that is currently locked by another user. This locking mechanism is in place to prevent concurrent modifications that could lead to data inconsistencies.
  
  Cause:
  
  User Locking: Another user is currently editing or has opened the customizing data, which places a lock on it.
  Session Timeout: A user may have left a session open, causing the lock to persist even if they are no longer actively working on it.
  System Error: Occasionally, system errors or crashes can leave locks in place that do not get released properly.
  
  
  Solution:
  
  Wait and Retry: If the lock is temporary, waiting for the other user to finish their work and release the lock may be the simplest solution.
  Identify the Locking User: Use transaction code SM12 to check for