This object contains the index value of the Zone or
Zone alias to which this member belongs.
If the value of the corresponding instance of
hh3cFcZsZoneMemberParentType is 'zone', this object
will contain the value of the hh3cFcZsZoneIndex object of
the Zone to which this member belongs.
If the value of the corresponding instance of
hh3cFcZsZoneMemberParentType is 'alias', this object
will contain the value of the hh3cFcZsAliasIndex object
of the Zone alias to which this member belongs.