Message type: E = Error
Message class:  CNV_MBT_DIAG - Message class for diagnosis tool 
Message number: 001
Message text: Authorization & missing
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The SAP error message CNV_MBT_DIAG001 typically indicates an authorization issue related to the Migration Object in the SAP system. This error often arises during data migration processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
Cause: Missing Authorizations: The user executing the migration does not have the necessary authorizations to access the migration objects or perform the required actions. Role Assignment: The user may not have the appropriate roles assigned that include the necessary authorizations for the migration process.
Configuration Issues: There may be configuration issues in the migration cockpit or the specific migration object being used.
Solution: Check User Authorizations: Use transaction code SU53 immediately after encountering the error to check which authorizations are missing. Review the authorization logs to identify the specific missing authorizations. Assign Necessary Roles: Ensure that the user has the appropriate roles assigned. This may include roles related to data migration, such as SAP_MIGRATION_USER or other relevant roles that provide access to
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