Server Responses - CData Sync Documentation

Typically, the status of an HTTP server response can be summarized by its HTTP status code. The following table lists HTTP status codes that Sync can send, along with when you can expect these status codes.

HTTP Status Code	Description
200 OK	The request is processed by the server without error.
201 Created	The request is successful, and the specified entity is created by the server.
204 No Content	A request returns this status when the requested resource contains a null value or when the service applies a return=minimal preference.
400 Bad Request	The request either is not understood or is missing required parameters.
401 Unauthorized	The user is not authenticated or authorized to access this resource.
403 Forbidden	Access is denied to this resource.
404 Not Found	The resource does not exist.
405 Method Not Allowed	The HTTP method that was specified is not allowed for this resource.
429 Too Many Requests	The user either sent too many requests in a given amount of time or exceeded the maximum number of concurrent requests.
501 Not Implemented	The server does not support the functionality that is required to fulfill the request. This response is returned when the server does not recognize the request method and is not capable of supporting it for any resource.