ticketTypeId
The ticket type ID for the selected seat. When null, the seat is booked with
the organizer-preferred ticket type for its category (see
SeatmapCategory.preferredTicketType). If no preference is configured, a
client error is returned and the seat is not added.
If your client supports showing a ticket type selection dialog, either check
SeatmapCategory.preferredTicketType first and only skip the dialog when a
preference exists, or err on the safe side and always pass the selected ticket
type — that way the mutation succeeds regardless of whether a preference has
been configured.
Type
This field resolves to ID.