On an Observed object -- one managed object that UCS Manager's observe/monitoring framework is currently tracking and reporting changes for -- cucsObserveObservedFsmRmtInvErrCode is a Gauge32 counter/value representing the numeric remote error code returned by the far-end system the last time this FSM stage invoked it. An admin monitors this number because it quantifies the internal progress or configuration of that specific Observed instance's operation, which is otherwise invisible outside UCS Manager's own FSM engine. For example, a rising or stalled value on cucsObserveObservedFsmRmtInvErrCode tells the admin whether the Observed instance's task is actively making progress or has stopped moving forward.