Message type: E = Error
Message class:  CNV_MBT_46 - PCL message class 
Message number: 433
Message text: Activity &1 is not a mass starter
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The SAP error message CNV_MBT_46433 indicates that the activity you are trying to execute is not recognized as a mass starter. This error typically occurs in the context of data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
Cause: The error can arise due to several reasons: Incorrect Activity Type: The activity you are trying to execute may not be defined as a mass activity in the system.
Configuration Issues: There may be configuration issues in the migration project or the specific activity you are trying to run. Missing Authorizations: The user executing the activity may not have the necessary authorizations to perform mass activities. System Version: The version of SAP you are using may not support the specific mass activity you are trying to execute.
Solution: To resolve the error, you can take the following steps: Check Activity Definition: Verify that the activity you are trying to execute is indeed defined
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