How To Fix /SCMB/MD_LOCK012 - Master data object currently locked by parallel prior. maintenance

SAP Error Message - Details

• Message type: E = Error

• Message class: /SCMB/MD_LOCK -

• Message number: 012

• Message text: Master data object currently locked by parallel prior. maintenance

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SCMB/MD_LOCK012 - Master data object currently locked by parallel prior. maintenance ?

  The SAP error message /SCMB/MD_LOCK012 indicates that a master data object is currently locked due to parallel maintenance activities. This typically occurs when multiple users or processes are trying to access or modify the same master data object simultaneously, leading to a lock situation to ensure data integrity.
  Cause:
  
  Concurrent Access: Multiple users or processes are trying to edit the same master data object at the same time.
  Long-running Transactions: A previous transaction that is taking longer than expected may hold the lock on the master data object.
  System Configuration: Certain configurations in the SAP system may lead to more frequent locking scenarios.
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for a few moments and then retry the operation. The lock will be released once the other transaction is completed.
  Identify the Lock: Use transaction code SM12 to check for active locks. You can identify the user or process that is holding the lock and take appropriate action.
  Terminate the Lock: If you have the necessary authorizations and it is safe to do so, you can delete the lock entry in SM12. However, this should be done with caution as it may lead to data inconsistencies.
  Review Processes: Analyze the processes that are causing the locks. If certain transactions are frequently causing locks, consider optimizing them or scheduling them during off-peak hours.
  Increase Lock Timeout: If applicable, you may consider increasing the lock timeout settings in the system configuration, but this should be done carefully and in consultation with your SAP Basis team.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: To view and manage lock entries.
  SM21: To check system logs for any related issues.
  ST22: To check for dumps that might indicate underlying issues.
  
  
  SAP Notes: Check for any relevant SAP Notes that may provide additional insights or patches related to locking issues.
  Documentation: Review SAP documentation on master data management and locking mechanisms to understand how to better manage concurrent access.
  
  Best Practices:
  
  User Training: Ensure that users are trained on how to avoid concurrent modifications of the same master data objects.
  Change Management: Implement a change management process to minimize the chances of parallel maintenance on critical master data.
  Monitoring: Regularly monitor system performance and locking situations to proactively address potential issues.
  
  By following these steps, you should be able to resolve the /SCMB/MD_LOCK012 error and minimize its occurrence in the future.