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The HTTP 402 status code indicates that the client must make a payment to access the requested resource. [2] It is typically used in situations where the server requires payment before granting access to the content or service. This code serves as a reminder that financial transaction or authorization is needed to proceed further.
This class of status code indicates the client must take additional action to complete the request. Many of these status codes are used in URL redirection. [2]A user agent may carry out the additional action with no user interaction only if the method used in the second request is GET or HEAD.
Payment gateways are a service that helps merchants initiate e-commerce, in-app, and point of sale payments for a broad variety of payment methods. The gateway is not directly involved in the money flow; typically it is a web server to which a merchant's website or POS system is connected. A payment gateway often connects several acquiring ...
The Open Payment Initiative, or O.P.I. for short, was launched to standardize the application interface between the electronic point of sale (EPOS) application and any cashless payments solution installed on the electronic funds transfer at point of sale (EFTPOS) payment terminal.