Step 1: Verify that no Member, Scope, Epics or Stories exist in VersionOne
First, notice there is only the Administrator user in the system:

Next, notice there is only the System (All Projects) Scope Asset available:

Then, notice there are no Portfolio Items (Epic Assets):

And, no Backlog Items (Story Assets):

Finally, notice there are no TeamRooms:

Starting with this empty instance, let's continue to the Batch API payload to fill it up!