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The 4xx (Client Error) class of status code indicates that the client seems to have erred. Except when responding to a HEAD request, the server SHOULD send a representation containing an explanation of the error situation, and whether it is a temporary or permanent condition. These status codes are applicable to any request method. User agents SHOULD display any included representation to the user.

https://www.rfc-editor.org/rfc/rfc9110.html#name-client-error-4xx

400 Bad Request

0

401 Unauthorized

0

402 Payment Required

0

403 Forbidden

0

404 Not Found

0

405 Method Not Allowed

0

406 Not Acceptable

0

407 Proxy Authentication Required

0

408 Request Timeout

0

409 Conflict

0

410 Gone

0

411 Length Required

0

412 Precondition Failed

0

413 Payload Too Large

0

414 URI Too Long

0

415 Unsupported Media Type

0

416 Range Not Satisfiable

0

417 Expectation Failed

0

418 I'm a teapot

0

421 Misdirected Request

0

422 Unprocessable Entity

0

423 Locked

0

424 Failed Dependency

0

425 Too Early

0

426 Upgrade Required

0

428 Precondition Required

0

429 Too Many Requests

0

431 Request Header Fields Too Large

0

451 Unavailable For Legal Reasons

0