You enter multicurrency transactions in the same way as functional-currency transactions. The only extra consideration arises if you need to change exchange rates or assign a different tax group to the transaction.
The currency for an invoice, credit note, or debit note is displayed along with the current exchange rate when you enter a vendor number.
To change exchange-rate information for a document, use the Rates tab that appears for multicurrency transactions. You can change the rate type, rate date, and exchange rate for the document.
You can change the tax group for a document only to another tax group that also uses the vendor's currency.
When you post multicurrency transactions, Accounts Payable converts the amounts to the functional currency, using the exchange rate information entered with the transaction.