How To Fix PQ045 - The key was already changed in another session

SAP Error Message - Details

• Message type: E = Error

• Message class: PQ - HR-PD: Personnel Development

• Message number: 045

• Message text: The key was already changed in another session

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 PQ045 - The key was already changed in another session ?

  The SAP error message PQ045, which states "The key was already changed in another session," typically occurs in the context of working with master data or transactional data in SAP, particularly when multiple users or sessions are trying to modify the same data simultaneously. This can lead to conflicts, as SAP locks the data to prevent inconsistencies.
  Cause:
  
  Concurrent Access: The most common cause of this error is that another user or session has already changed the key or data you are trying to modify. SAP uses locks to ensure data integrity, and if one session has locked the data, another session will not be able to make changes until the lock is released.
  Session Timeout: If a session is left open for too long without activity, it may time out, and any changes made in that session may not be recognized by other sessions.
  Data Consistency: The system is designed to maintain data consistency, and if a key change is detected in another session, it will prevent further changes until the situation is resolved.
  
  Solution:
  
  Refresh the Session: If you encounter this error, try refreshing your session or logging out and back in. This can help you get the latest data and resolve any temporary locks.
  Check for Other Sessions: If you have multiple sessions open, check if you are trying to modify the same data in another session. Close any unnecessary sessions.
  Communicate with Other Users: If you are in a multi-user environment, communicate with your colleagues to ensure that no one else is making changes to the same data at the same time.
  Wait and Retry: If another user is making changes, you may need to wait until they complete their task and then try again.
  Use Transaction Codes: If applicable, use transaction codes like SM12 to check for locks on the data you are trying to modify. You can see which user or session is holding the lock and take appropriate action.
  Consult with IT Support: If the issue persists, it may be necessary to consult with your IT support team or SAP Basis team to investigate further, especially if it seems to be a recurring issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message. SAP frequently releases updates that may address known issues.
  Documentation: Review SAP documentation related to the specific module you are working with, as there may be additional context or troubleshooting steps available.
  User Training: Ensure that users are trained on how to handle concurrent data access and the importance of data locks in SAP.
  
  By following these steps, you should be able to resolve the PQ045 error and continue your work in SAP.