How To Fix CNV_MBT468 - Substate write failed for session &

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 468

• Message text: Substate write failed for session &

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT468 - Substate write failed for session & ?

  The SAP error message CNV_MBT468 with the description "Substate write failed for session &" typically occurs during data migration processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there was a failure in writing the substate information for a specific session, which can be caused by various factors.
  Possible Causes:
  
  Database Issues: There may be issues with the database, such as locks, insufficient space, or connectivity problems.
  Authorization Problems: The user executing the migration may not have the necessary authorizations to write to the database or specific tables.
  Session Management: The session might be in an inconsistent state or not properly initialized.
  Data Consistency: There could be issues with the data being migrated, such as invalid entries or data format mismatches.
  Technical Errors: Bugs or technical issues in the migration tool or related components.
  
  Solutions:
  
  Check Database Status: Ensure that the database is up and running without any locks or issues. Check for sufficient space and connectivity.
  Review Authorizations: Verify that the user has the necessary authorizations to perform the migration tasks. This includes access to relevant tables and transaction codes.
  Restart the Session: If the session is in an inconsistent state, try restarting the migration session. This may involve canceling the current session and starting a new one.
  Validate Data: Review the data being migrated for any inconsistencies or errors. Ensure that the data format matches the expected format in the target system.
  Check Logs: Look at the detailed logs for the migration process to identify any specific errors or warnings that could provide more context about the failure.
  SAP Notes: Search for relevant SAP Notes that may address this specific error. SAP frequently releases updates and patches that can resolve known issues.
  Contact SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including logs and the context in which it occurred.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes related to data migration, such as LTMC (Migration Cockpit) or LTMOM (Migration Object Modeler).
  Migration Tools: Understand the specific migration tools being used and their configurations.
  Documentation: Review SAP documentation related to data migration processes for best practices and troubleshooting steps.
  
  By following these steps, you should be able to diagnose and resolve the CNV_MBT468 error effectively.