Root Prefab (Blue)
The root of a prefab hierarchy.
Nested Prefab (Purple, Orange, Green, Red)
Nested prefab, the icon color depends on the depth of the nested prefab.
Root Model (Blue)
The root of a model.
Nested Model (Purple, Orange, Green, Red)
Nested model, the icon color depends on the depth of the nested prefab.
Disconnected Prefab Instance (Any color with a red "X")
The (nested) prefab is no longer connected to the prefab asset and will not be updated with any changes made to the original prefab.
Applying or reverting the prefab will reconnect it to the prefab asset.
A prefab disconnects when you use 'Break Prefab Instance' in the GameObject menu or if you delete/move a child in the hierarchy of the prefab (same as with regular Unity prefabs).
Missing Prefab (White with a red "X")
The original asset of the (nested) prefab has been deleted.
Missing Child (Any color with a yellow "?")
Some objects in the prefab are not registered internally. There are a few possible ways to fix this, depending on the cause of the missing data:
- Right-click on the prefab ion and choose "Fix"
- Revert the changes to the prefab through the Revert button in the Inspector
- Apply the changes to the prefab through the Apply button in the Inspector.
- Reimport the prefab.