The type that defines the fields for the payment reference, such as last four digits of a credit card.
Type that uses PaymentInstrumentReference
Calls that use PaymentInstrumentReference
The identifier of the buyer's PayPal cart, which is returned by the initiateGuestPayment method. This ID is generated by PayPal and required for the PayPal Smart Button eBay guest payment flow.
The last four digits of the credit card number being used to pay for the items.