In Germany this is called “Baubuch”. This approval book is necessary in Germany when the vehicle is parked or operated on a public place. The Baubuch is delivered by the German” Bauordnungsambt”. The book contains all drawings , calculations, approvals stamped by the TÜV. This book is part of the vehicle and will be inspected in certain countries before the screen can be operated at an event. The book has a validity of 3 years. After that period, the approval must be renewed, including a new inspection by the German TÜV.