The following persons shall not be required to register under the provisions of § 34-20B-29 : (1) An agent, or an employee thereof, of any manufacturer, distributor, or dispenser of any controlled drug or substance if such agent is acting in the usual course of his business or employment; (2) A common or contract carrier or warehouseman, or an employee thereof, whose possession of any controlled drug or substance is in the usual course of his business or employment; (3) A person in possession of any controlled drug or substance pursuant to a lawful order of a practitioner. Source: SL 1970, ch 229 , § 9 (b); SDCL Supp, § 39-17-73. 34-20B-31. Repealed by SL 2004, ch 232 , § 2.