How To Fix CNV_CDMC_CA155 - Required locks could not be set

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_CDMC_CA - CDMC Clearing Analysis

• Message number: 155

• Message text: Required locks could not be set

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_CDMC_CA155 - Required locks could not be set ?

  The SAP error message CNV_CDMC_CA155: Required locks could not be set typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that the system was unable to acquire the necessary locks on the database objects that are required for the migration process to proceed safely.
  Causes:
  
  Database Lock Conflicts: Other processes or transactions may be holding locks on the same database objects that the migration process needs to access.
  Long-Running Transactions: If there are long-running transactions in the system, they may prevent the migration process from acquiring the necessary locks.
  Insufficient Authorizations: The user executing the migration may not have the necessary authorizations to set locks on the required objects.
  System Performance Issues: High system load or performance issues can lead to delays in acquiring locks.
  
  Solutions:
  
  
  Check for Active Locks:
  
  Use transaction code SM12 to check for active locks in the system. Identify any locks that may be held by other users or processes and resolve them if possible.
  
  
  
  Terminate Long-Running Transactions:
  
  If you identify long-running transactions that are holding locks, consider terminating them if they are not critical. Use transaction code SM50 or SM66 to monitor and manage processes.
  
  
  
  Retry the Migration Process:
  
  After resolving any lock conflicts, retry the migration process. Sometimes, simply waiting for a short period can allow locks to be released.
  
  
  
  Check User Authorizations:
  
  Ensure that the user executing the migration has the necessary authorizations to set locks on the required database objects.
  
  
  
  System Performance Monitoring:
  
  Monitor system performance to ensure that it is not overloaded. If necessary, schedule the migration during off-peak hours to reduce contention for resources.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SM12: Display and manage locks.
  SM50: Monitor active processes.
  SM66: Monitor global processes.
  
  
  
  SAP Documentation: Refer to the official SAP documentation for the specific migration tool you are using for additional guidance and best practices.
  
  
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  
  
  If the problem persists after trying the above solutions, consider reaching out to SAP Support for further assistance.