/SCWM/HU_WM074 - Handling unit &2 is already locked by user &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCWM/HU_WM -

• Message number: 074

• Message text: Handling unit &2 is already locked by user &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCWM/HU_WM074 - Handling unit &2 is already locked by user &1 ?

  The SAP error message /SCWM/HU_WM074 indicates that a handling unit (HU) is currently locked by another user. This typically occurs in the context of warehouse management processes where multiple users may attempt to access or modify the same handling unit simultaneously.
  Cause:
  
  Concurrent Access: Another user is currently processing or has locked the handling unit for a transaction, preventing other users from making changes.
  Session Timeout: A previous session may not have released the lock due to a timeout or an unexpected termination.
  System Errors: Occasionally, system errors or bugs can lead to locks not being released properly.
  
  Solution:
  
  Wait and Retry: If the lock is temporary, waiting for the other user to complete their transaction may resolve the issue. You can retry the operation after some time.
  Identify the Locking User: Use transaction code SM12 to check for locks. You can search for the handling unit number and see which user has locked it. If necessary, you can contact that user to coordinate access.
  Release the Lock: If you have the necessary authorizations, you can manually delete the lock entry in SM12. However, this should be done with caution, as it may disrupt the other user's work.
  Check for Background Jobs: Sometimes, background jobs may hold locks. Check if any background processes are running that might be using the handling unit.
  System Restart: In rare cases, a system restart may be required to clear persistent locks, but this should be done as a last resort and typically requires coordination with your IT department.
  
  Related Information:
  
  Transaction Codes: 
  
  SM12: To view and manage lock entries.
  SM21: To check system logs for any related errors.
  SE11: To view the data dictionary and understand the structure of handling units.
  
  
  Documentation: Refer to SAP Help documentation for more details on handling units and warehouse management processes.
  User Training: Ensure that users are trained on proper handling unit management to minimize locking issues.
  
  If the problem persists after trying the above solutions, it may be necessary to consult with your SAP Basis team or SAP support for further assistance.