Collection Class Defines If And How Accounts Are Monitored
As described above, every account references a collection class. The collection class defines if and how its accounts are monitored. There are three options:
The accounts are monitored by the Account Debt Monitor
The accounts are monitored by the Overdue Monitor (this is described in this chapter).
The accounts are not monitored for overdue debt.
Note: 
Migration. If you plan to migrate from the Account Debt Monitor (ADM) method of collection to the Overdue Monitor method, a special Overdue Monitor algorithm (C1-ACT-CSW) has been supplied that will skip accounts that are eligible for review by the Overdue Monitor if they have an active collection, severance or write-off process. This algorithm should be plugged in the applicable Collection Class Overdue Rules so that it will be invoked first. This allows accounts with active ADM-oriented collection activities to work themselves through the system. When an account no longer has any active ADM-oriented activities, monitoring responsibilities will be assumed by the Overdue Monitor.