HTTP Response Codes

Code	Name	Notes
200	OK	Request was a success. Only process data from the service when you receive this code
400	Bad Request	Occurs during exceptional circumstances such as the service is unable to find an ID. Check if the response Content-type or Accept was JSON. If so the JSON object is an exception hash with the message keyed under error
404	Not Found	Indicates a badly formatted request. Check your URL
429	Too Many Requests	You have been rate-limited; wait and retry. The headers X-RateLimit-Reset, X-RateLimit-Limit and X-RateLimit-Remaining will inform you of how long you have until your limit is reset and what that limit was. If you get this response and have not exceeded your limit then check if you have made too many requests per second.
503	Service Unavailable	The service is temporarily down; retry after a pause