According to the BACnet protocol documentation:

Defines a standardized object that represents and contains the information required for managing information alerts from a BACnet device. "Information alerts" are interesting notifications that are not related to algorithmic or intrinsic reporting of an object. The Alert Enrollment object allows these alerts to be generated without impacting the Event_State of the object to which the alerts are related.

Objects of type alertEnrollment have the following properties:

•ackedTransitions

•description

•eventAlgorithmInhibit

•eventAlgorithmInhibitRef

•eventDetectionEnable

•eventEnable

•eventMessageTexts

•eventMessageTextsConfig

•eventState

•eventTimeStamps

•notificationClass

•notifyType

•objectIdentifier

•objectName

•objectType

•presentValue

•profileLocation

•profileName

•propertyList

•tags