How To Fix CNV522 - The activity "&1" can not be restarted

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV - Conversion: Messages for Conversion Services (CNCC)

• Message number: 522

• Message text: The activity "&1" can not be restarted

What causes this issue?

Status management has detected a situation that does not allow the
subsequent execution of the activity "&V1&" (program &V2&) .

System Response

The activity cannot be restarted. Otherwise data inconsistency in the
database might occur.

How to fix this error?

Check your dataset. The database conversion may have to be canceled.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV522 - The activity "&1" can not be restarted ?

  The SAP error message CNV522, which states "The activity '&1' cannot be restarted," typically occurs during data migration or conversion processes, particularly when using SAP's Data Migration tools or during system upgrades. This error indicates that a specific activity (denoted by "&1") has already been completed and cannot be executed again in its current state.
  Causes:
  
  Activity Already Completed: The most common cause is that the activity you are trying to restart has already been successfully completed in the current session.
  Incorrect Sequence: The activities may need to be executed in a specific order, and attempting to restart an activity that is not in the correct sequence can lead to this error.
  Data Integrity Issues: If there are issues with the data that was processed in the previous run, it may prevent the activity from being restarted.
  Configuration Issues: There may be configuration settings that prevent the activity from being restarted.
  
  Solutions:
  
  Check Activity Status: Verify the status of the activity in the migration cockpit or relevant transaction. If it has been completed, you may not need to restart it.
  Review Logs: Look at the logs for the migration process to understand what was completed and if there were any warnings or errors that need to be addressed.
  Reset the Activity: If you need to rerun the activity, you may need to reset it. This can often be done through the migration tool or by using specific transaction codes to reset the status.
  Follow the Correct Sequence: Ensure that you are following the correct sequence of activities as defined in the migration guide or documentation.
  Consult Documentation: Refer to the SAP documentation or notes related to the specific migration tool you are using for any additional troubleshooting steps or prerequisites.
  Contact SAP Support: If the issue persists and you cannot determine the cause, consider reaching out to SAP support for assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help in monitoring or managing the migration process (e.g., LTMC for Migration Cockpit).
  SAP Notes: Check for any SAP Notes related to the specific migration tool or version you are using, as they may provide additional insights or fixes.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to address the CNV522 error and proceed with your data migration or conversion activities.