Status Codes

Normal

Status Code	Encoding	State Description
200	OK	Request succeeded.
204	No Content	Request succeeded, but no response is returned.
202	Accepted	Asynchronous request submitted successfully.

Abnormal

Status Code	Encoding	State Description
400	Bad Request	Invalid request. Do not retry the request before modification.
401	Unauthorized	The authorization information provided by the client is incorrect or invalid. Check the username and password.
403	Forbidden	The request is rejected. The server understood the request, but is refusing to fulfill it. The client should not repeat the request without modifications.
404	Not Found	The requested resource could not be found. Do not retry the request before modification.
405	Method Not Allowed	The method specified in the request is not supported for the requested resource. Do not retry the request before modification.
409	Conflict	The request could not be processed due to a conflict. The resource that the client attempts to create already exists, or the update request fails to be processed because of a conflict.
413	Request Entity Too Large	The request is larger than that a server is able to process. The server may close the connection to prevent the client from continuing the request. If the server temporarily cannot process the request, the response will contain a Retry-After header field.
415	Unsupported Media Type	The server is unable to process the media format in the request.
422	Unprocessable Entity	The request is well-formed but is unable to be processed due to semantic errors.
500	Internal Server Error	The server is able to receive the request but unable to understand the request.
501	Not Implemented	The server does not support the requested function.
503	Service Unavailable	The requested service is unavailable. Do not retry the request before modification.