Message type: E = Error
Message class:  CNV_20200_CHECK - Messages for check functions (company code merge) 
Message number: 120
Message text: The currency settings are different on non-leading ledger level
The currency settings are different on non-leading ledger level.
Error
You cannot run the transformation solution Company Code Merge because
certain prerequisites have not been met. 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_CHECK120 indicates that there is a discrepancy in currency settings between the leading ledger and non-leading ledgers in your SAP system. This error typically arises during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
Cause: The error occurs when: The currency settings (such as currency type, currency code, or currency conversion settings) for the non-leading ledgers do not match those of the leading ledger. There may be inconsistencies in the configuration of the ledgers, such as different currencies being assigned to different ledgers, which can lead to issues during data processing.
Solution: To resolve this error, you can follow these steps: Check Ledger Configuration: Go to the SAP Customizing Implementation Guide (IMG) and navigate to Financial Accounting (New) > General Ledger Accounting (New) > Ledgers > Define Ledgers. Verify the currency settings for both the leading and non-leading ledgers. Ensure that they are consistent and that the
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