How To Fix CNV_MBT343 - Activity &1 could not be started; the old process is not finished yet.

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 343

• Message text: Activity &1 could not be started; the old process is not finished yet.

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_MBT343 - Activity &1 could not be started; the old process is not finished yet. ?

  The SAP error message CNV_MBT343 indicates that a specific activity in a migration or conversion process could not be started because a previous process is still running or has not yet completed. This is common in scenarios where multiple activities are dependent on one another, and the system prevents the initiation of a new activity until the previous one has finished.
  Cause:
  
  Ongoing Process: The most common cause is that a previous migration or conversion activity is still in progress. This could be due to long-running processes or a failure that left the process in a locked state.
  Locking Mechanism: SAP uses locking mechanisms to ensure data integrity during migration processes. If a process is still active, it will block subsequent activities from starting.
  System Performance: If the system is under heavy load, processes may take longer to complete, leading to this error.
  
  Solution:
  
  Check Active Processes: Use transaction codes like SM50 or SM66 to check for active processes. Look for any processes related to the migration or conversion activities that might still be running.
  Wait for Completion: If you find that a process is still running, you may need to wait for it to complete. Monitor the progress and ensure that it finishes successfully.
  Terminate Stuck Processes: If a process is stuck or has failed, you may need to terminate it. You can do this from the process overview in SM50 or SM66. Be cautious when terminating processes, as this can lead to data inconsistencies.
  Check Logs: Review the logs for the migration or conversion process to identify any issues that may have caused the previous activity to hang or fail. This can provide insights into what went wrong.
  Restart the Activity: Once the previous process has completed or been terminated, you can attempt to restart the activity that was blocked.
  System Performance: If the issue is related to system performance, consider optimizing the system or scheduling the migration activities during off-peak hours.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes like SM50 (Process Overview), SM66 (Global Process Overview), and ST22 (Dump Analysis) for troubleshooting.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance related to the CNV_MBT343 error.
  Documentation: Review the documentation for the specific migration or conversion process you are working on, as it may contain specific prerequisites or steps that need to be followed.
  
  By following these steps, you should be able to resolve the CNV_MBT343 error and successfully proceed with your migration or conversion activities.