How To Fix PSB_API_MSGCL999 - Operation not supported for locked objects

SAP Error Message - Details

• Message type: E = Error

• Message class: PSB_API_MSGCL -

• Message number: 999

• Message text: Operation not supported for locked objects

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message PSB_API_MSGCL999 - Operation not supported for locked objects ?

  The SAP error message "PSB_API_MSGCL999 Operation not supported for locked objects" typically occurs when there is an attempt to perform an operation on an object that is currently locked. This can happen in various scenarios, such as when trying to modify or delete a project, task, or other objects in the Project System (PS) module while they are locked by another user or process.
  
  Cause:
  
  Object Locking: The object you are trying to access is locked by another user or process. This is a common scenario in multi-user environments where one user is editing an object while another user tries to access it.
  Transaction in Progress: If a transaction is currently being processed, it may lock the object until the transaction is completed.
  Background Jobs: Sometimes, background jobs may lock objects while they are being processed.
  
  
  Solution:
  
  Check Lock Entries: Use transaction code SM12 to check for lock entries. You can see which user or process