RedTrack supports "POST" and "GET" methods, you need to choose the correct one for your Network. We recommend using the "GET" method because it is commonly used for most of the Networks.
Choosing the method determines how form data is submitted to the server. When the method is “GET”, all form data is encoded into the URL, appended to the action URL as query string parameters. With “POST”, form data appears within the message body of the HTTP request.