Choose the source system tree in the Administrator Workbench under Modeling.
In your source system choose Copy exchange rates in the context menu.
Define where you want to load your file from and select the file. Only csv files are allowed as file type.
Under Mode you can select if you only want to simulate the upload or if you want to update or copy the exchange rates. Existing records are updated with the Update exchange rates option. Table TCURR is first deleted and new records are then loaded with the Recopy exchange rates option.
Uploading Exchange Rates from Flat Files 