Message type: E = Error
Message class:  FINS_FI_MIG - SAP S/4HANA Finance: Data Migration 
Message number: 078
Message text: Maintain an exchange rate type for data migration
Data migration has to fill the amount in company code currency for all
items of the universal journal. In case amounts are available in other
currencies only, e.g. for purely statistical items in table COEP, the
company code currency is translated from another amount.
The exchange rate type used for this currency translation has not been
maintained.
Affected items are migrated with zero amount.
Maintain the exchange rate type for currency translation in the
<DS:SIMG.FINSC_MIG_CURR>IMG</>.
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 FINS_FI_MIG078 indicates that there is a missing exchange rate type that is required for data migration processes, particularly when dealing with financial data in the SAP system. This error typically arises during the migration of financial data, such as during the transition to SAP S/4HANA or when performing data uploads using tools like the Migration Cockpit.
Cause: The error occurs because the system cannot find a defined exchange rate type that is necessary for converting currencies during the data migration process. Exchange rate types are essential for ensuring that financial transactions are accurately represented in the correct currency.
Solution: To resolve this error, you need to maintain an exchange rate type in the SAP system. Here are the steps to do this: Access the Exchange Rate Type Configuration: Go to the SAP Easy Access screen. Navigate to the following path: SPRO -> SAP Reference IMG -> Financial Accounting (New) -> Financial Accounting Global
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