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

SAP Error Message - Details

• 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

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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 user holding the lock:
  
  If another user is editing the PO, ask them to save and exit to release the lock.
  
  
  
  If the lock is stale or orphaned:
  
  If the lock is held by a session that is no longer active (e.g., user logged off improperly), you can delete the lock entry in SM12.
  Be cautious when deleting locks to avoid data inconsistencies.
  
  
  
  Check background jobs or workflows:
  
  Verify if any background job or workflow is processing the PO.
  Wait for the job to complete or investigate if it is stuck.
  
  
  
  Review custom code or enhancements:
  
  If the error occurs during a custom program or enhancement, check if the lock is being handled properly.
  Ensure locks are released timely.
  
  
  
  General advice:
  
  Avoid long editing sessions on POs.
  Educate users to save and exit promptly.
  Monitor locks regularly if this issue is frequent.
  
  
  
  Related Information:
  
  Transaction SM12: Display and manage lock entries.
  Lock object for Purchase Order: EKKO (header), EKPO (item).
  SAP Note: Check for any SAP Notes related to locking issues in your SAP version.
  Lock Mechanism: SAP uses enqueue/dequeue function modules to manage locks.
  Debugging: If needed, debug the enqueue/dequeue calls in custom code.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  PO is locked by another user/process
  
  
  Solution
  Check and release lock via SM12; coordinate with users; check jobs/workflows; fix custom code
  
  
  Transaction
  SM12 (Lock Entries)
  
  
  Lock Object
  EKKO (PO header)
  
  
  
  If you need further help, please provide details such as the transaction or program where the error occurs, and the SAP system version.