PaymentIntentNextActionThreeDSecureChallenge
Present the ACS challenge in a visible iframe/surface. If
challenge.methodis GET, iframe the URL; if POST, self-postparamsto the URL. Pollstatus_urluntil terminal.- Type: object · ThreeDSHttpAction
challenge required - Type: stringenum
flow requiredWhich 3DS flow to execute.
valuesfrictionless method challenge
- Type: string
idempotency _key requiredOptional key to correlate retries/refreshes on the same 3DS attempt.
- Type: stringFormat: uri
status _url requiredPoll this URL (your API) until the PaymentIntent leaves requires_action/processing.
- Type: object · ThreeDSHint
hint - Type: object · ThreeDSMessage
message - Type: string | nullFormat: uri
return _url Merchant's return URL (echoed back). Your 3DS return page should 302 here.

