HTTP Status Code 203 refers to Non-Authoritative Information. This code indicates that the request was successful, but the returned metadata may not be exactly the same as available on the origin server. Essentially, the server processed the request, but it obtained the data from a third-party source or modified it in some way. It’s often used in caching scenarios where intermediary servers relay information that may not be fully reliable. This is mostly used for mirrors or backups of another resource. Except for that specific case, the 200 OK response is preferred to this status.