https://heycam.github.io/webidl/#notallowederror includes it but https://developer.mozilla.org/en-US/docs/Web/API/DOMException#Error_codes doesn't. This came up in https://github.com/w3c/webauthn/issues/305#issuecomment-282356407
Comment 1 by jyasskin@chromium.org
, Feb 28 2017