Status Codes

**Table 1** Return codes for successful requests
Return Code	Type	Description
200	OK	Normal response to GET, PUT, and POST requests
201	Created	Normal response to POST requests
204	No Content	Normal response for DELETE operations

**Table 2** Return values for failed requests
Return Value	Description
400 Bad Request	The server failed to process the request.
401 Unauthorized	You need to enter the username and password to access the page requested.
403 Forbidden	Access to the requested page is forbidden.
404 Not Found	The server cannot find the requested page.
405 Method Not Allowed	The method specified in the request is not allowed.
406 Not Acceptable	The response generated by the server could not be received by the client.
407 Proxy Authentication Required	You must use a proxy server for authentication so that the request can be processed.
408 Request Timeout	The request timed out.
409 Conflict	The request could not be processed due to a conflict.
500 Internal Server Error	The request failed to be fulfilled because of a service error.
501 Not Implemented	The request failed to be fulfilled because the server does not support the required function.
502 Bad Gateway	The request failed to be fulfilled because the server receives an invalid response from an upstream server.
503 Service Unavailable	The request failed to be fulfilled because the system is abnormal.
504 Gateway Timeout	Gateway timed out.