Payment Flow

Integrating QOOP with an existing website is extremely easy and can be achieved with a few simple steps. At a high level you want to achieve the following:

• POST transaction details to load the QOOP PayExpress

• Calculate a request hash to ensure transaction integrity

• Provide a URL which QOOP would post back the authorization response

• Query the transaction details directly from QOOP Get Transaction Endpoint to ensure the actual transaction amount was approved.

Step 1 POST is made with Transaction parameters to the QOOP payment endpoint. This is known as the beginning of the payment leg.

Step 2 A RESPONSE is sent from the payment endpoint.

Step 3 The merchant’s website initiates a GET request to the payment confirmation endpoint requesting the status of the concluded transaction. This is the beginning of the getTransaction leg.

Step 4 A RESPONSE is sent from the confirmation endpoint containing the status of the transaction.

The only requirement is to POST data to the QOOP server. The next section describes how to create this POST.