The HollaEx API uses the following error codes:
Bad Request -- Your request is invalid.
Unauthorized/Forbidden -- Your api token is not valid.
Not Found -- The specified request could not be found.
Method Not Allowed -- You tried to access a request with an invalid method.
Gone -- The request has been removed from our servers.
Too Many Requests -- You're requesting too many requests! Slow down!
Internal Server Error -- We had a problem with our server. Try again later.
Service Unavailable -- We're temporarily offline for maintenance. Please try again later.