Message type: E = Error
Message class:  CNV21500 - Messages for HR conversions basis 
Message number: 005
Message text: No data in RELID <&1,&2>.
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The SAP error message CNV21500005 No data in RELID <&1,&2> typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there is no data available for the specified RELID (relationship ID) in the source system or the specified context.
Cause: Missing Data: The most common cause is that the data expected for the specified RELID does not exist in the source system. This could be due to incomplete data extraction or incorrect selection criteria. Incorrect Configuration: The configuration settings for the migration process may not be set up correctly, leading to the system looking for data that is not available. Data Mapping Issues: There may be issues with how data is mapped from the source to the target system, resulting in the system not being able to find the expected data. Data Filters: Filters applied during the data extraction or
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