202202 Accepted
The request has been accepted for processing, but the processing has not been completed yet.
226The server has fulfilled a GET request and the response is a representation of the result of one or more instance-manipulations applied to the current instance.
The server applied delta encoding to the response as requested by the client using an If-Modified-Since header and IM (Instance Manipulation) methods. The response is a diff, not the full resource.
No fix needed. Apply the delta to your cached copy of the resource to get the current version. If you need the full resource, send a request without delta-encoding headers.
202The request has been accepted for processing, but the processing has not been completed yet.
204The server successfully processed the request but is not returning any content in the response body.
405The HTTP method used is not supported for the requested resource.
303The response to the request can be found at a different URL using a GET method.
511The client needs to authenticate to gain network access, typically for captive portals.
507The server cannot store the representation needed to complete the request (WebDAV).