To identify internal ID of an object, follow the below steps:
1. Login to Aria Operation Product UI and navigate to Operations - Configurations - Inventory Management
2. Expand "Adapter Instances" and find the desired adapter
3. Click on the top level of the adapter instance type you wish to get the internal ID(s) for. In this example, we used the vCenter Server Instance.
4. Click the "columns" icon toward the bottom of the screen.
5. Check the box for "Internal ID" and click OK.
6. The internal ID should now be visible. If not, please make sure to use the scrollbar at the bottom of the page for hidden information.