Operations Sentinel can raise an alert for the following reasons:
A network communications problem
A problem encountered by Operations Sentinel Logging
A problem detected with an alert raised against a managed system
A failed activation of an alert policy, or an alert action that did not successfully complete
A system value that exceeds or falls below its threshold limit
All of the above alerts have a System attribute of spo or sas and appear under the Zone Alerts icon, except threshold alerts. The System attribute of a threshold alert is the system whose threshold limit was violated. A threshold alert is under the Zone Alerts icon if the system is in the open zone.