Use the ADD directive to add value(s) to a characteristic
 attribute of the Subordinate Reference entity.

 You can use the ADD directive on all characteristic attributes of
 the Subordinate Reference entity.

 Syntax:

 ADD DSA SUBORDINATE REFERENCE <attr> {<value>,...}

 where <attr> is the name of the Characteristic
 attribute and <value> is the value you want to add to
 the attribute.