Message type: E = Error
Message class:  CNV_20200_CHECK - Messages for check functions (company code merge) 
Message number: 220
Message text: Fiscal year variants have diff. posting periods for future fiscal year &1
The system found fiscal year variants with different posting periods in
the future fiscal year &V1&. The corresponding posting periods of the
future fiscal year do not coincide, or the future fiscal years have
different values.
Error
The fiscal year variants must be first harmonized before a company code
merge is possible. We recommend that you contact SAP for support by
creating a ticket using component CA-LT-CNV.
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_20200_CHECK220 indicates that there is a discrepancy in the posting periods for future fiscal years between different fiscal year variants. This error typically arises during data migration or conversion processes, particularly when using SAP's Conversion Tools or during the implementation of new fiscal year settings.
Cause: The error occurs when: Different fiscal year variants are configured in the system, and they have different posting periods for the same future fiscal year. The system detects that the posting periods defined for one fiscal year variant do not match those defined for another fiscal year variant for the same future fiscal year.
Solution: To resolve this error, you can follow these steps: Identify Fiscal Year Variants: Determine which fiscal year variants are being used in your system. You can do this by checking the configuration in the SAP system (Transaction code: OB29). Check Posting Periods: For each fiscal year variant, check the posting periods defined for the future
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