How To Fix CNV_MBT220 - Dequeue on local entry session_id &1, subactivity &2, task ID &3 not set

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 220

• Message text: Dequeue on local entry session_id &1, subactivity &2, task ID &3 not set

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT220 - Dequeue on local entry session_id &1, subactivity &2, task ID &3 not set ?

  The SAP error message CNV_MBT220 typically occurs in the context of data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is an issue with the dequeue operation for a specific session, subactivity, and task ID.
  Cause:
  The error message CNV_MBT220 can be caused by several factors, including:
  
  Session Locking: The session or task may be locked by another process, preventing the dequeue operation from being completed.
  Incomplete Process: The task may not have been completed successfully, leading to an inconsistency in the session state.
  Database Issues: There may be underlying database issues that are preventing the proper handling of the session.
  Configuration Issues: Incorrect configuration settings in the migration cockpit or related tools can lead to this error.
  
  Solution:
  To resolve the CNV_MBT220 error, you can try the following steps:
  
  
  Check for Locks: Use transaction code SM12 to check for any locks on the session or task ID. If you find any locks, you may need to release them.
  
  
  Review Logs: Check the logs for the migration process (transaction SLG1) to identify any preceding errors or warnings that could provide more context about the issue.
  
  
  Restart the Process: If the session is in an inconsistent state, you may need to restart the migration process. Ensure that you have saved any necessary data before doing this.
  
  
  Check Configuration: Review the configuration settings in the migration cockpit to ensure that everything is set up correctly.
  
  
  Database Consistency: If you suspect database issues, consider running database consistency checks or consulting with your database administrator.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates available that resolve known issues.
  
  
  Contact SAP Support: If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance. Provide them with the error message details, session ID, subactivity, and task ID for better troubleshooting.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM12 (for lock entries), SLG1 (for application logs), and SE38 (for executing reports).
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit to understand the expected workflow and any prerequisites.
  Community Forums: Check SAP Community forums or other user groups for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to diagnose and resolve the CNV_MBT220 error effectively.