Not Acceptable

The 406 Not Acceptable HTTP status code is sent in response to requests that cannot be satisfied according to the request's Accept headers. When a client sends a request to the server, it can include Accept headers to specify the media types (such as text/html, application/json, etc.) that it is willing to receive. If the server cannot return a response matching any of the media types listed by the client, it will issue a 406 Not Acceptable status. This code plays a vital role in content negotiation, allowing the server to inform the client that the requested content cannot be provided in a format that would be acceptable to the client. It encourages the client to either modify the Accept headers in their request to include a broader range of media types or to request a different resource.