Once the payment has been accepted, you must submit an order to Nexway that provides the information about the product purchased (createOrder API).
Depending on the API return code, the order is accepted or not. A subscriptionID will also be returned if the product is a subscription product.

Note: The real end-user email is requested in the order submission. For security reasons, some publishers send the information to the end-user directly in order to deliver and unlock the product.