Raley Purchase Orders currently support only one currency for all purchase orders. This is also known as Default Currency. We will add support for multiple currencies soon, so your users will be able to choose in which currency a particular Purchase order should be represented.
Default currency is a currency in which your budgets are represented. When a purchase order is expressed in a different currency, the exchange rates will apply, so, you'll still see your current budgets statistics expressed in the Default currency.
By default, the value for Default Currency is USD. If you would like to use a different default currency, your user in FINANCE role should set BEFORE creating any purchase orders. Once there're purchase orders in the system you cannot change the Default currency anymore.
The following picture shows how to navigate to currency management to set the value of Default currency: