PaymentMethodDetails from GetOrders

[sktong]

Hi, I used GetOrders operations to retrieve the order information, I notice that the field "PaymentMethodDetails" of the response has enumeration values of "Standard" and "Invoice". But this seems different from what I saw in the documentation where it says PaymentMethod is limited to Cash On Delivery (COD) and Convenience Store (CVS) payment methods and a COD order has PaymentMethod Possible values: COD - Cash On Delivery; GC - Gift Card, and PointsAccount - Amazon Points. Anyone knows why this discrepancy happens? Apart from the "Standard" and "Invoice", are there any other possible values? Thanks a lot.