How To Fix BC_DATAMODEL_SERVICE021 - Lock could not be set (system error)

SAP Error Message - Details

• Message type: E = Error

• Message class: BC_DATAMODEL_SERVICE - BC Training (All Courses)

• Message number: 021

• Message text: Lock could not be set (system error)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message BC_DATAMODEL_SERVICE021 - Lock could not be set (system error) ?

  The SAP error message BC_DATAMODEL_SERVICE021 indicates that a lock could not be set due to a system error. This error typically occurs in scenarios where the system is trying to access or modify data that is currently locked by another process or transaction. Here are some potential causes, solutions, and related information for this error:
  Causes:
  
  Database Locking: The most common cause is that the data being accessed is locked by another transaction. This can happen if another user or process is currently editing the same data.
  System Resource Issues: Insufficient system resources (like memory or CPU) can lead to issues with setting locks.
  Deadlocks: A deadlock situation may occur where two or more processes are waiting for each other to release locks.
  Configuration Issues: Incorrect configuration in the SAP system or database settings can lead to locking issues.
  Transport Issues: If the error occurs during a transport, it may be related to the transport not being properly released or locked.
  
  Solutions:
  
  Check for Active Locks: 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 (e.g., wait for the lock to be released or contact the user).
  Release Locks: If you find unnecessary locks, you can manually release them using transaction SM12. However, be cautious when doing this, as it may lead to data inconsistency.
  Monitor System Resources: Check system performance and resource usage. If the system is under heavy load, consider optimizing performance or increasing resources.
  Review Background Jobs: If the error occurs during a background job, review the job logs for any issues that may be causing the lock.
  Check for Deadlocks: Use transaction SM21 to check the system log for any deadlock situations and resolve them accordingly.
  Consult SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide patches or updates.
  System Restart: In some cases, a system restart may help clear any lingering locks or resource issues.
  
  Related Information:
  
  Transaction Codes:
  
  SM12: Display and manage locks.
  SM21: System log for monitoring.
  SM37: Monitor background jobs.
  
  
  SAP Notes: Always check the SAP Support Portal for any specific notes related to this error message, as they may provide additional context or solutions.
  Documentation: Review SAP documentation for best practices on handling locks and transactions.
  
  If the issue persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.