All PUT and POST endpoints can return any of the following errors:
HTTP Status Code
The request body contains invalid or improperly formatted JSON.
Invalid Merchant API credentials were passed in the Authorization header.
Method Not Allowed
The request was made using an unacceptable HTTP Method. Depending on the endpoint, only PUT or POST requests will be allowed. Use the OPTIONS HTTP Method to determine which methods are allowed for each endpoint.
The request included an Accept header for something other than application/json or */*.
Unsupported Media Type
The request did not include a Content-Type header, or its value was anything other than application/json.
Internal Server Error
A common cause of this response from PUT/POST endpoints is that the request body is missing or empty.