How To Fix WRF_REF028 - &4 Reference module &1 is locked by user &2

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_REF - Messages from References for Materials Without History

• Message number: 028

• Message text: &4 Reference module &1 is locked by user &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WRF_REF028 - &4 Reference module &1 is locked by user &2 ?

  The SAP error message WRF_REF028 indicates that a reference module (such as a material, vendor, or customer) is currently locked by another user. This typically occurs when one user is editing or processing data related to that reference module, preventing other users from making changes until the lock is released.
  Cause:
  
  User Lock: Another user is currently editing the reference module, which causes a lock to be placed on it.
  Transaction in Progress: A transaction that involves the reference module is still in progress, and the system has not yet released the lock.
  System Error: Occasionally, a system error or crash may leave a lock in place even after the user has exited the transaction.
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for the other user to complete their transaction and release the lock. You can periodically check if the lock has been released.
  Identify the Locking User: Use transaction SM12 (User Locks) to identify which user has locked the reference module. You can search for the specific object that is locked.
  Contact the User: If you identify the user who has the lock, you can contact them to see if they can complete their work or release the lock.
  Release the Lock: If necessary and if you have the appropriate authorizations, you can manually delete the lock in transaction SM12. However, this should be done with caution, as it may lead to data inconsistencies if the other user is still working on the data.
  Check for Background Jobs: Sometimes, background jobs may hold locks. You can check transaction SM37 to see if any background jobs are running that might be causing the lock.
  System Restart: In rare cases, if the lock persists and cannot be resolved, a system restart may be required, but this should be done as a last resort and typically involves coordination with your SAP Basis team.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage user locks.
  SM37: To check background jobs.
  SM21: To view system logs for any errors or issues that may have caused the lock.
  
  
  Documentation: Refer to SAP Help documentation for more details on user locks and handling them.
  User Training: Ensure that users are trained on how to properly exit transactions to avoid leaving locks in place.
  
  By following these steps, you should be able to resolve the WRF_REF028 error and continue your work in SAP.