Om en byggnad inte har några BuildingParts ska som minst attributen geometry3DLoD1 eller geometry3DLoD2 eller geometry3DLoD3 eller geometry3DLoD4 anges. ###>If a Building does not have any BuildingParts, at least the geometry3DLoD1 or geometry3DLoD2 or geometry3DLoD3 or geometry3DLoD4 attributes shall be provided.