User Redirect
During a payment request there is a high chance you will need to redirect the user (hosted flow / 3ds challenge).
Such redirects may require either a simple navigation to the provider’s page, or a POST request with specific parameters.
To redirect the user, redirect_request is used.
Returning the customer to the system
Section titled “Returning the customer to the system”After the transaction is completed, the user must land back on the merchant’s page. To make that happen, the third-party provider must send them to the URL from processing
