Followup dialogues can in general only be triggered right after their parent dialogues. But there are cases when one wants to sidestep this limitation, mainly when using a quick reply button to trigger a followup. Normally the button would no longer work later in the chat, but this can be forced by including the id of the parent dialogue (i.e. the dialogue containing the button) in the payload under the name exchange_id. The id of a dialogue can be obtained from its URL in the platform.