Message type: E = Error
Message class:  CNV20410 - message class for package 20410 (operating concern merge) 
Message number: 201
Message text: Program is currently running
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The SAP error message CNV20410201 indicates that a program is currently running, which prevents the execution of another instance of the same program or transaction. This error typically occurs in the context of data migration or conversion processes, particularly when using SAP's Conversion Tools.
Cause: Concurrent Execution: The most common cause is that the program or transaction you are trying to execute is already running in the background or in another session. Long-Running Processes: If the program takes a long time to execute, it may still be running when you attempt to start it again. Locking Mechanism: SAP has a locking mechanism to prevent multiple instances of the same program from running simultaneously, which can lead to data inconsistencies.
Solution: Check Running Jobs: Use transaction SM37 to check for any active jobs related to the program. You can filter by user, job name, or status to find the running instance. Wait for Completion: If you find that
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