Message type: E = Error
Message class:  CNVMBT - Messages for MBT/API/PCL 
Message number: 164
Message text: Cluster Conversion activity not found in phase &1
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The SAP error message CNVMBT164 indicates that a specific cluster conversion activity could not be found during a particular phase of the data migration process. This error typically arises in the context of SAP S/4HANA migrations or data conversions using the SAP Migration Cockpit or other tools.
Cause: Missing Configuration: The cluster conversion activity may not be properly configured or defined in the system. Incorrect Phase: The error may occur if the system is looking for a conversion activity that is not applicable or available in the current phase of the migration process. Transport Issues: If the necessary transport requests containing the conversion activities have not been imported into the target system, this error can occur. Version Mismatch: There may be a version mismatch between the source and target systems, leading to missing activities.
Solution: Check Configuration: Verify that the cluster conversion activities are correctly configured in the system. This may involve checking the relevant customizing settings. Review
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