The Forward Payment Callback service allows you to pass the callback parameters received to the
merchantPostAuthUrl to the Nuapay TPP.
When working with our APIs, please use the Sandbox URI when testing and the Live URI when you move to Production.
LIVE https://api.nuapay.com/tpp SANDBOX https://sandbox.nuapay.com/tpp
If you haven't done so already and would like to do some testing, please Request Sandbox Access
Important: Endpoints may be extended from time to time and any changes we make will follow our Versioning and Backward Compatibility rules. This means that the code that you write today must be designed to be robust enough to handle any future changes (where a new object is added to (or removed from) a specific API response, for example).