SDCL § 21-24-5: Determination of rights under trust or decedent's estate.

Any person interested as or through a personal representative, trustee, conservator, or other fiduciary, creditor, devisee, legatee, heir, next of kin, or cestui que trust in the administration of a trust, or of the estate of a decedent, minor, protected person, or insolvent, may have a declaration of rights or legal relations in respect thereto:

(1) To ascertain any class of creditors, devisees, legatees, heirs, next of kin, or others;

(2) To direct the personal representatives or trustees to do or abstain from doing any particular act in their fiduciary capacity;

(3) To determine any question arising in the administration of the estate or trust, including questions of construction of wills and other writings.