The value of tHsmdaSchedulerPlcyLvl1GrpId specifies the group this
HSMDA scheduler policy level belongs to. If the value is '0', this
level is not assigned to a scheduler policy group. This object may not
be set simultaneously with tHsmdaSchedulerPlcyLvl1Rate.
Setting tHsmdaSchedulerPlcyLvl1GrpId to non-default value while
tHsmdaSchedulerPlcyLvl1Rate is non-default, results in the level being
added to the group and tHsmdaSchedulerPlcyLvl1Rate being set to
default.
Setting tHsmdaSchedulerPlcyLvl1GrpId to default value results in the
level being removed from any group and tHsmdaSchedulerPlcyLvl1WgtInGrp
being set to default.