Whether the currently visible payment form has enough valid input to submit.
ISO 8601 timestamp recorded by hosted Checkout when the event occurred. Use it for ordering and telemetry context, not as proof of payment.
OptionalpaymentSelected payment-method family, when Checkout can expose it safely.
Event discriminator.
Emitted when payer input changes the completion state of the form.
Treat
completeas a presentation hint only. Checkout revalidates the input before starting payment, and your server remains the authority for final Order status.