put https://api.katanox.com/v2/bookings//reservations/
When updating a Reservation, send in the entire reservation with its desired state. Note that this is not a partial update - all fields, specified or not, will be persisted to the existing Reservation object.
To add an additional guest, update or delete an existing guest, send a guest list with the necessary changes. The list in the update reservation request will update the associated guests in that reservation.
You can find more information in the Reservation guide