How To Fix MPD146 - Effectivity data is locked by user &

SAP Error Message - Details

• Message type: E = Error

• Message class: MPD - Message Class for A&D MPD

• Message number: 146

• Message text: Effectivity data is locked by user &

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 MPD146 - Effectivity data is locked by user & ?

  The SAP error message MPD146 indicates that the effectivity data you are trying to access or modify is currently locked by another user. This typically occurs in scenarios where multiple users are working with the same data, and one user has locked the data for editing.
  
  Cause:
  
  User Lock: Another user has opened the effectivity data for editing, which prevents other users from making changes until the lock is released.
  Session Timeout: Sometimes, 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: In rare cases, a system error or crash may leave a lock in place.
  
  
  Solution:
  
  Wait for Release: The simplest solution is to wait until the user who has locked the data finishes their work and releases the lock.
  Identify the Locking User: You can use transaction code SM12 to view the list of locks in the system. This