With the exception of Ping, which does not require authentication, all GET endpoints can return any of the following errors:
| HTTP Status Code | errorCode | Description |
|---|---|---|
| 401 Unauthorized | unauthorized | Invalid Merchant API credentials were passed in the Authorization header. |
| 405 Method Not Allowed | method_not_allowed | The request was made by a HTTP Method other than GET, HEAD or OPTIONS.For example, POST, PUT or DELETE. |
| 406 Not Acceptable | error | The request included an Accept header for something other than application/json or */*. |