This field shall indicate those alarms that have become active.
This field shall indicate those alarms that have become inactive.
This field shall be a copy of the Mask attribute when this event was generated.
This field shall be a copy of the new State attribute value that resulted in the event being generated. That is, this field shall have all the bits in Active set and shall NOT have any of the bits in Inactive set.
Body of the AlarmBase notify event
See
MatterSpecification.v13.Cluster § 1.15.8.1