How To Fix CNV_MBT484 - System message already successfully created

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 484

• Message text: System message already successfully created

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_MBT484 - System message already successfully created ?

  The SAP error message CNV_MBT484 indicates that a system message has already been successfully created. This error typically arises in the context of data migration or conversion processes, particularly when using SAP's Migration Cockpit or similar tools.
  Cause:
  The error occurs when the system attempts to create a message that has already been processed or created successfully. This can happen due to:
  
  Duplicate execution of a migration or conversion task.
  An attempt to reprocess a message that has already been marked as completed.
  Issues with the underlying logic in the migration program that checks for existing messages.
  
  Solution:
  To resolve the CNV_MBT484 error, you can take the following steps:
  
  
  Check Existing Messages: 
  
  Review the logs or the message history to confirm that the message in question has indeed been created successfully. You can do this by navigating to the relevant transaction or report that logs these messages.
  
  
  
  Avoid Duplicate Execution:
  
  Ensure that you are not unintentionally executing the same migration task multiple times. If you need to rerun a task, check if there is an option to reset or delete the previous execution.
  
  
  
  Clear or Reset the Process:
  
  If you need to reprocess the message, you may need to clear the existing entry. This could involve deleting the message or resetting the status in the database, depending on your specific migration tool and setup.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or notes related to the specific migration tool you are using. There may be specific instructions or patches available that address this error.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you cannot find a resolution, consider reaching out to SAP support for assistance. They may provide insights specific to your system configuration or the version of the migration tool you are using.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that can help you monitor and manage migration tasks, such as SLG1 for application logs.
  SAP Notes: Search for SAP Notes related to the CNV_MBT484 error for any known issues or fixes.
  Migration Cockpit: If you are using the SAP S/4HANA Migration Cockpit, ensure you are following the best practices outlined in the official SAP documentation.
  
  By following these steps, you should be able to address the CNV_MBT484 error effectively.