South Dakota Codified Laws
Chapter 02 - Creation Of Agency
Section 59-2-7 - Rescission of ratification.

59-2-7. Rescission of ratification.
A ratification may be rescinded when made without such consent as is required in a contract, or with an imperfect knowledge of the material facts of the transaction ratified, but not otherwise.

Source: CivC 1877, §1353; CL 1887, §3976; RCivC 1903, §1672; RC 1919, §1254; SDC 1939, §3.0108.