In Apple Business Manager you can purchase Apps and Books. The Apple Volume Purchase Program is to be discontinued.
If you have used the Apple Volume Purchase Program, this is a separate account from Apple Business Apps and Books.
You can either add both to the CapaInstaller Console or you can link the old VVP account to the Apple Business Apps and Books account.
Locations
Purchase Apps and Books
How to add Apple Business Apps and Books to CapaInstaller Console
Link VPP Account to Apple Business Apps and Books