challengeParameters

The parameters of an authentication challenge. Amazon Cognito returns challenge parameters as a guide to the responses your user or application must provide for the returned ChallengeName. Calculate responses to the challenge parameters and pass them in the ChallengeParameters of AdminRespondToAuthChallenge.

All challenges require USERNAME and, when the app client has a client secret, SECRET_HASH.

In SRP challenges, Amazon Cognito returns the username attribute in USER_ID_FOR_SRP instead of any email address, preferred username, or phone number alias that you might have specified in your AdminInitiateAuth request. You must use the username and not an alias in the ChallengeResponses of your challenge response.