next_action types

type	Description (required action)
redirect	Redirect the user to the URL in the next_action.url field (depending on your integration type it can be a payment page or a 3D Secure page).
submit_card	Submit card data to the URL in the next_action.url field and check the next_action in the response.
await_status_changes	No action required. Wait for webhooks about status changes.