S.D. Codified Laws § 15-6-45(c)
The subpoena may be served by any officer or person qualified to make service of a summons. The subpoena shall be served in the same manner as a summons is served, excepting that no service by publication is authorized. The subpoena must be served sufficiently in advance of the date upon which the appearance of the witness is required to enable such witness to reach such place by any ordinary or usual method of transportation which he may elect.
At the time of service of a subpoena, there shall be tendered to or on behalf of the person therein named the fees for one day's attendance and the mileage allowed by law. The fact of such payment, or the signed waiver thereof by the person named in the subpoena, shall be stated in the return. If such fees and mileage be not paid or waived, the witness shall not be obliged to obey the subpoena.
At the commencement of each day after the first day, a witness under subpoena may demand his fees for that day's attendance, and if the same is not paid, he shall not be required to remain.
When the subpoena is issued on behalf of the State of South Dakota or its political subdivisions or an officer or agency thereof, fees and mileage need not be tendered.
SDCL 15-6-45(c)