How To Fix WRF_PRC_BAS100 - Purchase order &1 is already locked

WRF_PRC_BAS100 - Overview

• Message type: E = Error

• Message class: WRF_PRC_BAS - General Purchasing, Seasonal Procurement Messages

• Message number: 100

• Message text: Purchase order &1 is already locked

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message WRF_PRC_BAS100 - Purchase order &1 is already locked ?

  The SAP error message:
  WRF_PRC_BAS100 Purchase order &1 is already locked
  
  Cause:
  This error occurs when a user or process tries to access or modify a Purchase Order (PO) that is currently locked by another user or process. SAP uses locking mechanisms to prevent data inconsistencies when multiple users or processes attempt to change the same document simultaneously. The lock ensures that only one user/process can edit the PO at a time.
  Common scenarios causing this error:
  
  Another user is currently editing the same Purchase Order.
  A background job or workflow is processing the PO.
  A previous session did not release the lock properly (e.g., due to a session timeout or crash).
  A program or custom code is holding the lock longer than expected.
  
  
  Solution:
  
  
  Check who holds the lock:
  
  Use transaction SM12 (Lock Entries) to check if the PO is locked.
  Enter the object type (e.g., EKKO for Purchase Order header) and the PO number.
  Identify the user/session holding the lock.
  
  
  
  Contact the