What do you need?
All you need are the Bosch APE base license, optionally supplemented with access reader expansion licenses, and the APE XProtect activation license. In addition you require the Bosch software APE 3.0 or a higher version and the APE XProtect Plug-in. These are free downloads which can be reached via the IPP Tool section after registration.
From Milestone you need a licensed and running Milestone XProtect system, licensed for access control.