How To Fix CNV_MBT218 - Enqueue on local entry session_id &1, subactivity &2, task ID &3 not set

CNV_MBT218 - Overview

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 218

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

Self-Explanatory Message

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CNV_MBT218 - Details

• The SAP error message CNV_MBT218 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 enqueue mechanism for a specific session, subactivity, or task ID during the migration process.
  
  Cause:
  The error message suggests that the system is unable to set an enqueue lock for a specific session, subactivity, or task. This can happen due to several reasons:
  
  Concurrency Issues: Multiple processes or users may be trying to access or modify the same data simultaneously, leading to contention for the enqueue lock.
  Session Management: The session ID may not be valid or may have expired, causing the system to fail in setting the enqueue.
  
  Configuration Issues: There may be misconfigurations in the migration settings or the environment that prevent proper locking mechanisms from functioning.
  Database Locks: There could be existing locks in the database