Message type: E = Error
Message class:  CNV_20200_CHECK - Messages for check functions (company code merge) 
Message number: 026
Message text: Functional area is inactive for all participating company codes
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The SAP error message CNV_20200_CHECK026 indicates that the functional area is inactive for all participating company codes in the context of a data migration or conversion process. This error typically arises during the execution of a conversion program, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
Cause: Inactive Functional Area: The functional area specified in the configuration is not active for any of the company codes involved in the migration. This could be due to: The functional area not being defined in the system. The functional area being deactivated or not assigned to the relevant company codes.
Configuration Issues: There may be issues in the configuration settings where the functional area is not properly linked to the company codes.
Solution: To resolve this error, you can follow these steps: Check Functional Area Configuration: Go to the SAP Easy Access screen and navigate to the configuration for functional areas. Use transaction code OBY6 to check the settings for
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