Status code
Also written: HTTP status code, status codes, 302 redirect, redirect, 200, 302, 401, 403, 404, 419, 422, 503
The number that starts every HTTP response and says how it went: 200 OK; 302 redirect to another address (after saving, or back to a form on failed validation); 401 Unauthorized (log in first, e.g. no API token); 403 Forbidden (known user, not allowed); 404 Not Found (no page there, or not your order); 419 Page Expired (missing or stale CSRF token, Laravel's own); 422 Unprocessable Content (JSON request failed validation); 503 Service Unavailable (maintenance mode).