HTTP/1.1 200 OK
Cache-Control: max-age=0, private, must-revalidate
Content-Type: application/json; charset=utf-8
Date: Fri, 15 Feb 2013 15:42:42 GMT
ETag: "e0b6339dc44a19a2901de1447ec94ebb"
Server: Apache/2.2.20 (Ubuntu)
Status: 200
Strict-Transport-Security: max-age=31536000
Vary: User-Agent
X-Powered-By: Phusion Passenger (mod_rails/mod_rack) 3.0.11
X-Rack-Cache: invalidate, pass
X-Request-Id: 6444d2d9467ed2a7ace471522f2d439b
X-Runtime: 0.245244
X-UA-Compatible: IE=Edge,chrome=1
Content-Length: 584
Connection: keep-alive

{"error":"invalid_resource","error_description":"One or more parameters were missing or invalid","messages":[{"param":"expiry_month","code":"expiry_month_invalid","message":"Expiry month can't be blank"}]}