On requests, you must set the currencyID attribute to one of the three-character currency codes for any of the supported PayPal currencies.

Limitations: Must not exceed $10,000 USD in any currency. No currency symbol. Decimal separator must be a period (.), and the thousands separator must be a comma (,).
Specifies a universally unique identifier. The UUID can only contain digits from 0-9 and letters from A-F. The UUID must be 32 characters long. For example, 1FB02B2-9D27-3acb-ABA2-9D539C374228