How To Fix CM012 - Bill of material locked by another user (only display possible).

SAP Error Message - Details

• Message type: E = Error

• Message class: CM - Task list messages: Material component allocations

• Message number: 012

• Message text: Bill of material locked by another user (only display possible).

What causes this issue?

The bill of material you want to maintain is being processed by
another user. For this reason, you can only display the bill of
material at the moment.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CM012 - Bill of material locked by another user (only display possible). ?

  The SAP error message CM012, which states "Bill of material locked by another user (only display possible)," typically occurs when a user attempts to edit a Bill of Material (BOM) that is currently being accessed or modified by another user. This locking mechanism is in place to prevent data inconsistencies and ensure that changes are made in a controlled manner.
  Cause:
  
  Concurrent Access: Another user is currently editing the BOM, which locks the record for editing.
  Transaction Locking: The BOM might be locked due to a transaction that is still in progress or has not been properly closed.
  System Issues: Occasionally, system errors or crashes can leave a BOM in a locked state.
  
  Solution:
  
  Wait for Release: The simplest solution is to wait until the other user has finished their work and released the lock. You can check with your colleagues to see if they are currently working on the BOM.
  Display Mode: If you only need to view the BOM, you can proceed in display mode, which is allowed even when the BOM is locked for editing.
  Check Lock Entries: Use transaction code SM12 to check for lock entries. You can see which user has locked the BOM and, if necessary, contact them to request access.
  Release Locks: If you have the necessary authorizations, you can manually release the lock from transaction SM12. However, this should be done with caution, as it may disrupt the other user's work.
  System Administrator: If the lock persists and you cannot identify the user or release the lock, contact your SAP system administrator for assistance. They can investigate further and resolve any underlying issues.
  
  Related Information:
  
  Transaction Codes:
  
  CS03: Display BOM
  CS02: Change BOM (will trigger the lock if another user is editing)
  SM12: Display and manage lock entries
  
  
  User Communication: It’s good practice to communicate with your team about who is working on which BOM to avoid conflicts.
  Documentation: Refer to SAP documentation or help files for more details on BOM management and locking mechanisms.
  
  By following these steps, you should be able to address the CM012 error effectively.