Message type: E = Error
Message class:  CNV_20320_CHECK - Messages for check functions (Activity Types merge) 
Message number: 023
Message text: No activity type mapping available; no organizational determination req.
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The SAP error message CNV_20320_CHECK023 indicates that there is no activity type mapping available for a specific organizational unit in the context of a data migration or conversion process. This error typically arises during the execution of a conversion program, particularly when using SAP's Conversion Tools or during the migration of data from legacy systems to SAP S/4HANA or other SAP environments.
Cause: Missing Mapping Configuration: The primary cause of this error is that the system cannot find a mapping for the activity type associated with the organizational unit in question. This could be due to: The activity type not being defined in the system. The mapping between the legacy system's activity types and the SAP system's activity types not being set up correctly. The organizational unit not being assigned to any activity type. Data Migration Issues: If you are migrating data, it is possible that the source data does not have corresponding entries in the
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