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