How To Fix MC520 - & & currently locked by user &

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 520

• Message text: & & currently locked by user &

What causes this issue?

The specified object is currently being edited by another user. For
reasons of consistency, it is locked until this user has finished
editing the object.

System Response

Editing of this object is cancelled.

How to fix this error?

Try to edit the object again after a few minutes or consult the user
defined in the message.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC520 - & & currently locked by user & ?

  The SAP error message MC520 typically indicates that a particular object (such as a material, document, or transaction) is currently locked by a user. This can happen in various SAP modules, particularly in the context of inventory management or material master data.
  Cause:
  
  User Lock: The object is being edited or processed by another user, which prevents other users from making changes until the lock is released.
  Session Timeout: Sometimes, a user may have left a session open, causing a lock on the object.
  System Error: Occasionally, a system error or crash can leave an object in a locked state.
  Long-running Transactions: If a transaction takes too long to complete, it may hold locks longer than expected.
  
  Solution:
  
  Wait and Retry: If the lock is temporary, waiting for the other user to finish their transaction may resolve the issue.
  Identify the Locking User: Use transaction code SM12 to view and manage locks. You can check which user is holding the lock and the object that is locked.
  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 lead to data inconsistencies if the other user is still working on the object.
  Contact the User: If you identify the user who is holding the lock, you can reach out to them to see if they can release the lock.
  Check for Background Jobs: Sometimes, background jobs may hold locks. Check transaction SM37 to see if any jobs are running that might be causing the lock.
  System Restart: In rare cases, a system restart may be necessary to clear persistent locks, but this should be done as a last resort and typically requires coordination with your SAP Basis team.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  SM37: To check background jobs.
  SM21: To view system logs for any related errors.
  
  
  User Authorizations: Ensure that you have the necessary authorizations to view and manage locks.
  Documentation: Refer to SAP Help documentation for more details on lock management and troubleshooting.
  
  If the issue persists or if you are unsure about taking any actions, it is advisable to consult with your SAP Basis team or system administrator for further assistance.