The response to a step up challenge View Source model/ChallengeResponse.d.ts, line 15 Members Type: string # instrumentId The PaymentInstrument id related to the step up challenge. View Source model/ChallengeResponse.d.ts, line 21 Type: string # reference Optional An optional reference that could be used for audit tracing View Source model/ChallengeResponse.d.ts, line 33 Type: string # token The value requested by the challenge. View Source model/ChallengeResponse.d.ts, line 29 Type: ChallengeResponseType # type The type of ChallengeResponse.token that has been provided View Source model/ChallengeResponse.d.ts, line 25