.. _parent-child_relationships: Parent-Child Relationships -------------------------- All entities in the system reside at a specific hierarchy and the data displayed is within the scope of the specified hierarchy. This means that every entity in the system - including users, device models and network components - has a parent hierarchy defined. A user is for example provisioned with a specific hierarchy node in a parent-child relationship. User names must be unique within a specific hierarchy. .. |VOSS-4-UC| replace:: VOSS-4-UC .. |Unified CM| replace:: Unified CM