This alarm status field is blank by default. It is a text field where a user can enter whatever they want for a status about the alarm. Some customers will put updates in here like "Paul is working on this" or something like that. When a status is entered it triggers an update on the alarm and the UpdateScript will be triggered and this status will be showed in the AlarmStatus field in Notifier.
Alarm status attribute value not displayed in alarm notification when Alarm is triggered in Spectrum OneClick
Causes of this problem:
Alarm status is an alarm based attribute
(Legacy KB ID CNC TS34108 )