How To Fix CM_SUB001 - Source specification &1 could not be locked

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_SUB - Substance (general)

• Message number: 001

• Message text: Source specification &1 could not be locked

What causes this issue?

The system attempted to place an exclusive lock on the source
specification. However, the source specification is already locked.

How to fix this error?

Ensure that the source specification is not currently being processed
or used.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CM_SUB001 - Source specification &1 could not be locked ?

  The SAP error message CM_SUB001 indicates that a source specification (usually a material or a resource) could not be locked for processing. This typically occurs in scenarios where multiple users or processes are trying to access or modify the same object simultaneously, leading to a conflict.
  Causes:
  
  Concurrent Access: Another user or process is currently using the source specification, preventing your transaction from locking it.
  Long-running Transactions: A transaction that takes a long time to complete may hold the lock longer than expected.
  System Performance Issues: High system load or performance issues can lead to delays in locking mechanisms.
  Database Locks: Locks at the database level may also prevent access to the source specification.
  
  Configuration Issues: Incorrect configuration in the system may lead to locking issues.
  
  Solutions:
  
  Wait and Retry: If the lock is due to another user, wait for a few moments and then try again.
  Identify Locking User: Use transaction SM12 to check for existing locks. You