The reason for the most recent failure of a Zone Set activation or
deactivation.
'none' - No activation/deactivation invoked or the
result of activation/deactivation is success.
'busy' - The management system is busy in some other
process.
'activeZoneSetTooBig' - The Active Zone Set size in packet reached
the maximum limit in Basic mode.
'noZoneSet' - No specified Zone Set found.
'noMember' - No port member found in the specified
Zone Set.