Message type: E = Error
Message class:  CNV_20400_CHECK - Messages for check functions (controlling area merge) 
Message number: 028
Message text: All involved controlling areas use to the profit center currency &1
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The SAP error message CNV_20400_CHECK028 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 a mismatch in the currency settings for the controlling areas involved in the migration process. Specifically, it states that all involved controlling areas must use the same profit center currency.
Cause: The error arises when: The profit center currency settings for different controlling areas are inconsistent. For example, one controlling area may be set to use a local currency (like EUR), while another may be set to use a different currency (like USD). The migration process requires that all controlling areas involved in the transaction or data being migrated must have the same profit center currency to ensure consistency and accuracy in financial reporting.
Solution: To resolve this error, you can take the following steps: Check Controlling Area Settings: Go to the SAP GUI and navigate to the
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