On an Observed object -- one managed object that UCS Manager's observe/monitoring framework is currently tracking and reporting changes for -- cucsObserveObservedFsmPrev is a text (SnmpAdminString) field holding the name of the previous FSM state this observed object was in before its current one. An admin reads this string because it carries the actual identifying detail -- not just an internal numeric ID -- needed to make sense of that specific Observed instance. For example, an admin reviewing Observed entries would look at cucsObserveObservedFsmPrev to see the concrete value rather than a bare object reference.