I cannot find anywhere in the AltertPay members' admin that lists the Currency Codes as required by our AMember setup procedures: The transaction currency as the 3-letter ISO 4217 alphabetical code But I found a public listing via a Google search. Are they all universal? So I am looking for the one for the American US and it says its: USD. Can that be used in our AMember admin or does AlertPay have their own codes they use? Thank you, Claudia