A release of one of two or more joint debtors does not extinguish the obligations of any of the others, unless they are mere guarantors; nor does it affect their right to contribution from him.
S.D. Codified Laws § 20-7-12
Joint debtors not released by release of one--Right of contribution
Source: CivC 1877, § 869; CL 1887, § 3493; RCivC 1903, § 1187; RC 1919, § 794; SDC 1939, § 47.0242.
Official source: South Dakota Legislature. Reproduced from public-domain South Dakota statutes; confirm against the official source for the current text. Not legal advice.