Status Code

Normal

Return Value		Description
200	OK	Request succeeded.
201	Created	Request processed.
202	Accepted	A task has been successfully delivered. However, it will be postponed because the system is busy currently.
204	No Content	The task is successfully delivered.

Abnormal

Return Value		Description
300	multiple choices	The requested resource has multiple available responses.
400	Bad Request	The request failed to be processed due to bad syntax.
401	Unauthorized	You must enter a username and the password to access the requested page.
403	Forbidden	Access to the requested page is forbidden.
404	Not Found	The requested page was not found.
405	Method Not Allowed	The request method is not allowed.
406	Not Acceptable	Response generated by the server is not acceptable to the client.
407	Proxy Authentication Required	The client must first authenticate itself with the proxy.
408	Request Timeout	The request timed out.
409	Conflict	The request is not processed due to a conflict.
429	Request Entity Too Large	The request throttling threshold is reached.
500	Unsupported Media Type	The request is not completed because there is an exception.
501	Too Many Requests	The request is not completed because the server does not support the requested function.
502	Internal Server Error	The request is not completed because the server receives an invalid response from the upstream server.
503	Not Implemented	The request is not completed because the system is temporarily abnormal.
504	Service Unavailable	The server has waited too long for a response from an upstream server.