How To Fix CMD_BS_MAT_CHMNG_API012 - Change number &1 could not be locked

SAP Error Message - Details

• Message type: E = Error

• Message class: CMD_BS_MAT_CHMNG_API - Message class for material change management

• Message number: 012

• Message text: Change number &1 could not be locked

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CMD_BS_MAT_CHMNG_API012 - Change number &1 could not be locked ?

  The SAP error message CMD_BS_MAT_CHMNG_API012 indicates that a change number could not be locked during a change management operation. This typically occurs in the context of change management processes in SAP, particularly when dealing with change numbers in the context of material management or engineering change management.
  
  Cause:
  
  
  Concurrent Access: The most common cause of this error is that another user or process is currently accessing or locking the change number. SAP uses locking mechanisms to prevent data inconsistencies, and if a change number is already locked by another transaction, you will receive this error.
  
  
  System Configuration: There may be configuration issues or settings in the system that affect how locks are managed.
  
  
  Database Issues: Sometimes, database locks or issues can lead to this error, especially if there are long-running transactions or deadlocks.
  
  
  User Authorizations: The user may not have the necessary authorizations to lock the change number.
  
  
  
  Solution:
  
  
  Check for Locks: Use transaction code SM12 to