S.D. Codified Laws § 47-15-12
Articles and bylaws--Action to invalidate amendment--Limitations
No action may be maintained to invalidate any amendment to the articles or bylaws because of the manner of its adoption unless commenced within two years after its adoption.
Source: SDC 1939, § 11.1136 (4) as enacted by SL 1965, ch 23, § 1; SL 2021, ch 194, § 1.