Fetch questionnaire by ID

Returns a single questionnaire, including its question structure (data) and the answers collected so far (values).

kind tells you what you are looking at. A standard questionnaire carries its questions in data.fieldGroups, keyed by field UUID in values. An external one carries no questions — open external_url instead.

url is a browser link to the questionnaire that works for the customer without a login. For external questionnaires it redirects to external_url.

Required permission: assigned_event_read or unassigned_event_read. Customers can always read questionnaires on their own bookings where allow_customer_view is set.