| # Installations Installation is the list of items or serialized items that belong to an Installation group. An Installation can be a unique object or a generic model. An Installation occupies the highest level in the Installation group structure. Installation group structure The Installation group structure is also referred to as the bill of serialized items. An Installation group structure is the list of serialized items that share the same location and customer as the Installation group. An installation group structure always consists of at least one Installation. Each physical breakdown structure or serialized item can be a part or member of the Installation group structure. To create the structure, you must define serialized item relations. An Installation group structure can have up to 99 levels and can be viewed graphically. Related topics Installation groups, Service |