Validate order references in order to be used for a new order using previous order as payment reference

GET {{baseUrl}}/paymentmethods/PREVIOUS_ORDER/refno/:OrderReference/

2Checkout supports 1-click purchases for returning customers who paid for their previous orders with credit card or Paypal.

Once a order reference has been validated, it can be used in the POST call on an order to place an order with a previous order reference.