South Dakota Codified Laws
Chapter 05 - Subpoena And Attendance Of Witnesses
Section 19-5-3 - Witness immune from service of summons while outside county of residence under subpoena.

19-5-3. Witness immune from service of summons while outside county of residence under subpoena.
A witness shall not be liable to be sued in a county in which he does not reside, by being served with a summons in such county while going, returning, or attending in obedience to a subpoena.

Source: CCivP 1877, §460; CL 1887, §5274; RCCivP 1903, §500; RC 1919, §2747; SDC 1939 & Supp 1960, §36.0404.