The tree list in the BTP Hierarchy page is a new read-only view, reflects the hierarchical structure of your BTP Global Accounts, Subaccounts, and Cloud Service Instances.

1. From the sidebar, select Systems & Provisioning → Systems tab → BTP Systems card. 
2. Select View Hierarchy to go to the BTP Hierarchy tree list. 
3. Select >/ν before each node to expand/collapse sub nodes. Or select Expand All/Collapse All from the tool bar. 

Note:
The subaccount independent services, for example, foundation services, are grouped under a special node Subaccount independent.