Importance Of Prefabs
The Prefab Asset acts as a template from which you can create new Prefab instances in the Scene.
ProStream uses Prefab system to differentiate one GameObject Hierarchy from another.
Important
All GameObjects must be Prefabs to be compatible with ProStream systems. Non-Prefab GameObjects are skipped by the matching systems.
As illustrated below, without Prefabs the only distinction between an Organizational_Object and a Complex_GameObject is the GameObjects name. While this might be sufficient to visually distinguish between the two, programmatically, they are the same.
Creating a Prefab removes the ambiguity and outlines a concrete blueprint of what a particular GameObject is and what it should contain.
With this distinction, the ProStream systems can accurately identify and match GameObjects in the scene. 