get the details of the invoice for an order ID

Content > ID the InvoiceID you will need to pay the invoice

Content > NetAmount the calculated net value of the order

Content > VATAmount the calculated VAT against the order

Content > Amount the total value of the invoice

Content > AmountPaid the value paid against the invoice

Pass in the OrderID returned from the SubmitOrder function as the Content for the function

Likely only to return the first invoice that it finds, so you may find issues trying to get the invoice you need via the API if for some reason there is more than one invoice against an order.

If the InvoiceID returned is 0, then no Invoice was found against the customer, this is typical for orders placed against a Trade customer

While this function does look like it could return a ProformaID, there are no functions available to pay Proformas via the API and it doesn't look to be populated given it was designed to return invoice details.