S.D. Codified Laws § 62-4-50
Any person or party participating in good faith in the making of a written request pursuant to § 62-4-47 is immune from any liability, civil or criminal, that might otherwise be incurred or imposed and has the same immunity for participation in any judicial proceeding resulting from the request. Immunity extends in the same manner to public officials or employees involved in the investigation of the facts contained in written requests or to any person who in good faith cooperates with the investigation. A written request made in good faith does not constitute the wrongful failure to pay a claim or to pay it on time. Any person or party who knowingly makes a false or malicious written request for an investigation, is guilty of a Class 2 misdemeanor.
SDCL 62-4-50