Message type: E = Error
Message class:  CNV_20100 - Messageclass for chart of account conversion 
Message number: 521
Message text: &1-&2 is converted org.independent. Org.determination via &4 is possible
The program found that field &V1&-&V2& is converted independent of an
organizational unit (target determination object = SPACE).
According to the technical analysis another determination (&V4&) with
target determination object &V3& exists. This determination is
considered as a better suggestion (from a pure technical point of view).
After phase CONVERSION check the correctness of the conversion for this
table.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_20100521 typically relates to issues encountered during the conversion of organizational units in the context of a data migration or system conversion project, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
Cause: The error message indicates that there is a problem with the conversion of organizational units (like company codes, plants, etc.) from the source system to the target system. The specific message suggests that the conversion is not possible due to the following reasons: Missing Mapping: There may be a lack of proper mapping between the source and target organizational units. Inconsistent Data: The data in the source system may not be consistent or may not meet the requirements for conversion.
Configuration Issues: There may be configuration issues in the target system that prevent the successful conversion of the organizational units. Dependencies: There could be dependencies on other organizational units that have not been resolved.
Solution: To resolve the error
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