Helix Core Server Administrator Guide: Multi-Site Deployment (2018.2)
Configuring centralized authorization and changelist servers
There are cases where rather than using federated services you want to
use a collection of servers that have a shared user base. In this
situation, you probably want to use specialized servers to simplify user
authentication and to guarantee unique change list numbers across the
organization. The following subsections explain how you create and use
these servers: P4AUTH
for centralized authentication and
P4CHANGE
to generate unique changelist numbers.