Q: iServer status codes list and description
A: 200: Indicates that the server successfully executed the client's HTTP request.
201: Indicates that the server successfully created a new resource on the client's request. The corresponding request type is POST or PUT.
400: Indicates that the request parameter of the client is not valid or not enough information is expressed.
401: Indicates that the resources operation is not completed because of the security reasons.
404: Indicates that the client request resource does not exist, that is, the URI is invalid.
405: Indicates that the resource does not support this operation.
406: Indicates that the resource does not support the expression format requested by the client
500: Indicates that there is unexpected situation on the server side, causing the request not to be completed.
