If you use multicurrency accounting, all payments in a payment batch are in the currency you specify for the payment batch.
The default bank rate for each transaction is set in the batch header. Click the Details link to view exchange rate information for the batch.
When you create the batch, the default rate for the batch comes from the A/P Currency screens, and is based on the rate type and the session date.
The vendor exchange rate for payments, prepayments, or miscellaneous payments also comes from the A/P Currency screens, and is based on the rate type and session date.
If you are applying a document, you cannot change any rates, because the document you are applying has already been entered and posted with a rate.
The Check Amount you enter in the A/P Payment Detail screen is in the functional currency.
The Applied Amount or Prepayment Amount shown on the Payment Detail table is in the vendor currency.
The exchange rates are for converting the bank currency or the vendor currency to your functional currency. If either of these currencies is the functional currency, the rate for that currency will be 1.0000000.
Note: If you use the A/P Rate Override screen to change the exchange rate, you will change the amount in the Check Amount field, which shows the amount in the vendor currency in this screen.