Checks the status of one order.

When to use: to confirm if an order is paid. For example, when you didn't receive the callback.

Which code do I use? Your own order number: the payment_code you sent when you started the payment (e.g. ORDER-1001). Herepay's invoice number (HP-INVAPI-...) won't work here.

Tip: give every order its own payment_code. If you reuse one, you get the latest payment that used it.

What you get back: the same details as Get Transactions, for this one order. If the order isn't found, you get 404.