The previous definition was 400 means the server can't understand the request. Current one is >The 400 (Bad Request) status code indicates that the server cann

The previous definition was 400 means the server can't understand the request. Current one is >The 400 (Bad Request) status code indicates that the server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed request syntax, invalid request message framing, or deceptive request routing). Of course, a lot of things could be said to be a client error.