HTTP Status Codes

Status Code	Description
200 - Success	The request was successful and submitted as expected.
400 - Invalid Syntax	The request was unsuccessful due to invalid syntax.
401 - Invalid Authentication	The request was unsuccessful due to invalid authentication.
404 - Item or Resource Not Found	The request was unsuccessful because the requested item or resource could not be found.
5xx (500, 502, 503, 504) - Server Error	The request was unsuccessful due to internal AHEAD server error.