How To Fix CNV_MBT446 - Activity start was not possible; see Execution Log for details

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 446

• Message text: Activity start was not possible; see Execution Log for details

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_MBT446 - Activity start was not possible; see Execution Log for details ?

  The SAP error message CNV_MBT446 indicates that an activity could not be started in the context of a data migration or conversion process, typically related to the SAP S/4HANA Migration Cockpit or similar tools. This error is often associated with the Migration Object Model (MOM) and can arise due to various reasons.
  Possible Causes:
  
  Missing Configuration: The migration object may not be properly configured or activated in the system.
  Authorization Issues: The user executing the activity may not have the necessary authorizations to perform the action.
  Data Issues: There may be inconsistencies or issues with the data being migrated, such as missing mandatory fields or incorrect data formats.
  Technical Errors: There could be underlying technical issues, such as problems with the database, transport layer, or system settings.
  Execution Log Details: The error message suggests checking the execution log for more specific details about what went wrong.
  
  Solutions:
  
  Check Execution Log: Review the execution log for detailed error messages that can provide insights into the specific issue. This log can often be accessed through the transaction code related to the migration cockpit or the specific migration activity.
  Verify Configuration: Ensure that all necessary configurations for the migration object are completed. This includes checking if the migration object is activated and properly set up.
  User Authorizations: Confirm that the user has the required authorizations to execute the migration activity. You may need to consult with your SAP security team to ensure proper roles are assigned.
  Data Validation: Validate the data being migrated to ensure it meets all requirements. Check for missing fields, incorrect formats, or any other data-related issues.
  System Health Check: Perform a health check on the SAP system to identify any underlying technical issues. This may involve checking system logs, database performance, and transport settings.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration activity you are performing. There may be known issues or additional steps required for certain migration scenarios.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their solutions.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, which may provide insights into common issues and best practices for data migration.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.