The Payant API is built on RESTful HTTP and as such supports standard HTTP request reponse codes.
|200||Request was successful.|
|400||A client error has occurred and request was not processed.|
|401||Request unauthorized as a result of an invalid API key.|
|404||Request was not processed because a resource was not found.|
|500||A client error has occurred and request was not processed.|
|501-504||An error has occurred on our server. If this happens please contact us immediately.|