The value of this object identifies the group
address screening list. There is at least one
group address screen and at most s group address
screens per SNI. The initial value of s is defined
to be 4. In the future more screening lists per
SNI may be allowed. The values of this object
correspond to the values of wfSmdsSwGAScrnIndex in the
wfSmdsSwGAScrnTable. This field applies only to
individual addresses on the SNI because it applies
only to destination address screening of group addresses.