S.D. Codified Laws § 29A-3-101
The power of a person to leave property by will, and the rights of creditors, devisees, and heirs to the person's property are subject to the restrictions and limitations contained in this code to facilitate the prompt settlement of estates. Upon the death of a person, that person's real and personal property devolves to the persons to whom it is devised by will or to those indicated as substitutes for them in cases involving lapse, renunciation, or other circumstances affecting the devolution of testate estate, or in the absence of testamentary disposition, to the heirs, or to those indicated as substitutes for them in cases involving renunciation or other circumstances affecting devolution of intestate estates, subject to homestead allowance, exempt property and family allowance, rights of creditors, elective share of the surviving spouse, and administration.
SDCL 29A-3-101