📄️ Merchant Registration
The very first step is to create a merchant entity in the FirstPay system.
📄️ Authorization
What's the idea?
📄️ Retrieving Payment Methods
A payment method is an entity that contains all the necessary information about an upcoming payment.
📄️ Sending payment
The payment creation request is sent after the user has filled in all the required fields for the selected payment method.
📄️ Sending complaint
A complaint creation request is sent in case of technical issues or other problems related to payments.
📄️ Handling Postback Requests
Payment and complaint verification is built on a postback request system.