Message type: E = Error
Message class:  CNV_MBT_46 - PCL message class 
Message number: 395
Message text: Member type &1 not defined
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The SAP error message CNV_MBT_46395 indicates that there is an issue with a member type that is not defined in the context of a data migration or conversion process. This error typically arises during the execution of a migration project, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools.
Cause: The error occurs when the system encounters a member type (e.g., a specific data structure or category) that is expected but not defined in the system. This can happen due to several reasons: Missing Configuration: The member type may not have been configured in the system prior to the migration. Incorrect Mapping: The mapping of data from the source system to the target system may be incorrect or incomplete. Data Model Changes: Changes in the data model between the source and target systems may lead to discrepancies in expected member types. Custom Developments: If there are custom developments or enhancements, they may
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