How To Fix RS_B4H_PREPARE_APD020 - Failed to release lock for APD '&1'.

SAP Error Message - Details

• Message type: E = Error

• Message class: RS_B4H_PREPARE_APD - Message class for APD transfer prepare package

• Message number: 020

• Message text: Failed to release lock for APD '&1'.

What causes this issue?

Failed to release application log for table RSB4HTAPD_MAP.

How to fix this error?

Delete application lock manually using SM12 transaction.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RS_B4H_PREPARE_APD020 - Failed to release lock for APD '&1'. ?

  The SAP error message RS_B4H_PREPARE_APD020 Failed to release lock for APD '&1' typically occurs in the context of SAP BW (Business Warehouse) when there is an issue with the locking mechanism for an Analysis Process Designer (APD) process. This error indicates that the system was unable to release a lock on a specific APD process, which can prevent the process from executing properly.
  Causes:
  
  Concurrent Execution: The APD process may be running concurrently, leading to a lock that cannot be released until the other process completes.
  System Performance Issues: High system load or performance issues can cause delays in releasing locks.
  Database Locking: There may be database-level locks that are preventing the release of the APD lock.
  Incomplete Process Termination: If a previous execution of the APD was terminated abnormally, it might leave behind a lock that is not released.
  Configuration Issues: Incorrect configuration of the APD or related objects can lead to locking issues.
  
  Solutions:
  
  Check Running Processes: Use transaction SM66 or SM50 to check for any running instances of the APD. If you find any stuck processes, you may need to terminate them.
  Release Locks Manually: You can use transaction SM12 to check for and manually delete any locks related to the APD process. Be cautious when doing this, as it may affect other users or processes.
  System Performance Monitoring: Monitor system performance and database locks using transaction ST22 for dumps or SM21 for system logs to identify any underlying issues.
  Restart the Process: If the APD process is stuck, try restarting it after ensuring that no other instances are running.
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as this may resolve known issues related to locking.
  Consult SAP Notes: Look for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM66, SM50, SM12, ST22, and SM21 for monitoring and managing processes and locks.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Documentation: Review SAP documentation related to Analysis Process Designer and locking mechanisms for more detailed information on how locks are managed in BW.
  
  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.