Message type: E = Error
Message class:  CNV - Conversion: Messages for Conversion Services (CNCC) 
Message number: 454
Message text: The generator is active in client &
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The SAP error message CNV454, which states "The generator is active in client &," typically occurs in the context of data migration or system conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that a data migration generator is currently active in the specified client, which can prevent certain operations from being executed.
Cause: Active Migration Generator: The primary cause of this error is that a migration generator (a tool or program used to facilitate data migration) is currently active in the specified client. This could be due to an ongoing migration process or an incomplete previous migration. Client-Specific Settings: The error is client-specific, meaning that the generator may be active in one client but not in others. This can happen if multiple clients are being used for testing or development.
Solution: To resolve the CNV454 error, you can follow these steps: Check Active Generators: Use transaction code SE38 or
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