How To Fix /SAPAPO/RET_MESSAGES591 - Planning version &1 cannot be locked due to locked restriction

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/RET_MESSAGES -

• Message number: 591

• Message text: Planning version &1 cannot be locked due to locked restriction

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/RET_MESSAGES591 - Planning version &1 cannot be locked due to locked restriction ?

  The SAP error message /SAPAPO/RET_MESSAGES591 indicates that a planning version in SAP Advanced Planning and Optimization (APO) cannot be locked because there is a restriction that is currently locked. This typically occurs when multiple users or processes are trying to access or modify the same planning version simultaneously, leading to a conflict.
  Cause:
  
  Locked Restriction: The planning version you are trying to access is currently locked due to another user or process that is working on it.
  Long-running Processes: A long-running job or transaction may have locked the planning version, preventing others from accessing it.
  User Lock: A specific user may have locked the planning version inadvertently, preventing others from making changes.
  
  Solution:
  
  
  Identify the Lock:
  
  Use transaction code SM12 to check for user locks. You can filter by the planning version or the user who might be holding the lock.
  Look for entries related to the planning version in question.
  
  
  
  Release the Lock:
  
  If you identify a lock that is no longer needed (e.g., a user has logged off or a process has completed), you can manually delete the lock entry in SM12.
  Ensure that you have the necessary authorizations to delete locks.
  
  
  
  Check Background Jobs:
  
  Use transaction code SM37 to check for any background jobs that might be running and holding the lock. If a job is taking too long, you may need to investigate or terminate it.
  
  
  
  Communicate with Users:
  
  If multiple users are working on the same planning version, coordinate with them to avoid conflicts. Establish a protocol for locking and unlocking planning versions.
  
  
  
  Retry Access:
  
  After resolving the lock issue, try accessing the planning version again.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: To view and manage user locks.
  SM37: To monitor background jobs.
  SCC4: To check the configuration of client settings, which may affect locking behavior.
  
  
  
  Documentation: Refer to SAP Help documentation for more details on locking mechanisms in APO and best practices for managing planning versions.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to locking in APO.
  
  
  By following these steps, you should be able to resolve the locking issue and access the planning version as needed.