`passkey_last_one`

HTTP 409conflict

This is your only passkey and your only way to sign in. Add another before removing it.

Handling it

Fix the request and send it again. message says what is wrong, and param names the parameter where there is one. Keep the request_id: it lets Parasend find the request.

The error, as the API returns it

{
  "error": {
    "type": "conflict",
    "code": "passkey_last_one",
    "message": "This is your only passkey and your only way to sign in. Add another before removing it.",
    "param": null,
    "request_id": "req_5e69684dc3de68bf8651a712"
  }
}