Message type: E = Error
Message class:  CNV_20200_CHECK - Messages for check functions (company code merge) 
Message number: 399
Message text: Target business place &1
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The SAP error message CNV_20200_CHECK399 with the description "Target business place &1" typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is an issue related to the business place specified in the migration data.
Cause: Invalid Business Place: The business place specified in the migration data does not exist in the target system.
Configuration Issues: The business place may not be properly configured in the target system, or it may not be active. Data Inconsistency: There may be inconsistencies in the data being migrated, such as missing or incorrect references to the business place.
Solution: Verify Business Place: Check if the business place specified in the error message exists in the target system. You can do this by navigating to the relevant configuration settings in SAP. Check Configuration: Ensure that the business place is correctly configured and active in the target system.
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