Challenge required

The KeenAuth APIs return this problem type with HTTP status 428 (Precondition Required).

Problem type

Field Value
Type URI https://docs.keenauth.com/errors/challenge_required
Code challenge_required
HTTP status 428 Precondition Required
Title Challenge required

Meaning

The credential step does not proceed until the bot challenge (ALTCHA) is solved; see the challenge extension.

Extension members

The response body carries these additional members:

Example response

Example response body. detail is a human-readable English description that is not meant for end users; instance identifies the request.

{
  "type": "https://docs.keenauth.com/errors/challenge_required",
  "title": "Challenge required",
  "status": 428,
  "code": "challenge_required",
  "detail": "...",
  "instance": "urn:idp:request:<request_id>",
  "challenge": "..."
}

All error codes: Error reference.