Get the current BILL exchange rate and exchange rate batch ID for paying an international vendor. The exchange rate batch ID is required for creating a payment with POST /v3/payments or POST /v3/payments/bulk.
BILL maintains all exchangeRate values in a batch. When a batch expires, a new batch ID is generated and all exchangeRate values are updated in the new batch. Use this endpoint to get the current exchange rate and batch ID based on the payment amount and vendor bill currency.
When an exchange rate batch expires, you need a new batch ID for your payments API operations. The batch expiration date is tied to the processDate you can set in your international payments API request (with POST /v3/payments or POST /v3/payments/bulk). In your international payments API request, processDate cannot be set as a date that is beyond the exchange rate batch expiration date.