Shape of the next step: approval in another channel, an in-frame code, or a user-initiated redirect.
ISO 8601 timestamp recorded by hosted Checkout when the event occurred. Use it for ordering and telemetry context, not as proof of payment.
Event discriminator.
Emitted when a payment requires an additional payer step.
The hosted experience owns the confirmation UI. The host application can use this event for non-sensitive analytics or to keep a modal open, but should not collect confirmation codes or intercept provider redirects.