S.D. Codified Laws § 29A-5-115

Any individual or entity indebted to a minor or protected person or having possession of a minor's or protected person's personal property, whether tangible or intangible, including an instrument evidencing a debt, stock, or right of action, may pay or deliver it to a conservator of the estate or like fiduciary appointed in another state upon presentation of proof of appointment and an affidavit stating that no conservatorship proceeding relating to the minor or protected person is pending in this state, and that the nonresident conservator or like fiduciary is entitled to payment or delivery.