55-1-49. Contest regarding settlor's signature.Notwithstanding anything to the contrary in §§55-1-46 to 55-1-51, inclusive, a no contest clause is enforceable against a beneficiary to the extent the beneficiary elects to contest or otherwise challenge the settlor's signature whereby such a challenge does not in any manner constitute good, probable, or reasonable cause if the settlor's signature was witnessed by nonrelative witnesses or a duly qualified nonrelative notary public or both. Source: SL 2012, ch 233, §11.
South Dakota Legal Code