We have multiple MDM servers and I was looking for a way to have multiple VPP account tokens using Apple Business manager. Here is the solution.
Apple business manager allows different locations. Locations can represent a building, department, or group.
So for example you could have three locations setup.
Once that is done, go to "Settings" on the bottom left then "Apps and Books"
At the bottom of that page you'll see three tokens, one for each location. Download the tokens and upload them to your MDM servers.
Now go to "Content" "Apps and books"
Select an app. You can now Transfer licenses between existing locations under "Manage Licenses."
or when you choose to buy a license you can assign it to a particular location.