As an alternative, the daily rates of exchange of foreign currencies can be deposited in the ACCOUNTING → CURRENCIES as the exchange rate (not the inversed R.O.E.).
This rate will then automatically be displayed for each foreign currency conversion in the invoicing.
In this case, not every employee has access to the basic data and the entries must be made in the responsible department (e.g. financial accounting department) and updated daily.

Pls note: If house currency is EUR  →  1 foreign currency = X Euro

R.O.E. field in the voucher items

If a voucher containing a currency conversion with USD is created in the in the invoicing in the order, the application automatically suggests the recorded R.O.E. in the field Currency conversion → R.O.E. and simultaneously determines the result of the conversion.