* '''x''': Mandatory in all cases.
==== Maintenance Configuration Customers Notification Settings ====
The sub tree stores the notification information for the maintenance service for the customer Customer Ltd. with the uid 4000001. This information is used as a fallback. The lookup is as follows:
# '''Unit:''' <code>uid=4000003,ou=units,ou=maintenance,ou=services,dc=stoney-cloud,dc=org</code>.