Message type: E = Error
Message class:  CNV20200 - Messages for development class CNV_20200 
Message number: 376
Message text: Non-participating company code &2 is assigned to &1 &3
Company code &V2& does not participate in the merge.
However company code &V2& is assigned to &V1& &V3&.
&V1& &V3& participates in the conversion.
After the conversion, the company code &V2& has an assignment to &V1&
&V4&.
Information
Specific feature of company codes for number assignment (BUKRSN).
Note that only the asset numbers of the participating company codes get
converted. Participating company codes must be mentioned in the mapping
table.
Note also that only the asset number levels for participating company
codes for number assignment (BUKRSN) get updated after the conversion.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV20200376 indicates that a non-participating company code is assigned to a specific entity, which is typically encountered during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
Cause: The error occurs when: A company code that is not set up to participate in a specific process (like a migration or conversion) is being referenced or used in a transaction or configuration. The company code may not be included in the list of participating company codes for the migration or conversion project.
Solution: To resolve this error, you can take the following steps: Check Company Code Configuration: Verify the configuration of the company code in question. Ensure that it is correctly set up and marked as a participating company code in the relevant project or migration settings. Update Migration Settings: If the company code should participate in the migration, update the migration settings to include it. This may involve adjusting
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