The MIB's DESCRIPTION for cucsLicenseInstanceFsmStamp is only the auto-generated stub 'Cisco UCS license:Instance:fsmStamp managed object property', but the 'fsmStamp' property name together with its DateAndTime type tell us this column, on a specific licensed-feature grant on a fabric interconnect (a feature name plus a quantity), holds the fsmStamp as UCS Manager's data model defines it, exposed here as a read-only SNMP value (read-only). The fsmStamp is the timestamp of the last change to this license instance's FSM state, which an admin uses to judge how fresh — or how stale and possibly stuck — the current activation status is. A fsmStamp that hasn't moved in hours while the instance still shows an in-progress state is a sign the activation has stalled.