Key facts: South Dakota's $50,000 estate value threshold determines whether simplified or formal probate procedures apply; a mandatory 30-day waiting period must elapse before sibling disputes can advance to contested hearings; standing as an interested party is required before filing objections; all probate objections must specify legal grounds such as undue influence, lack of testamentary capacity, or fiduciary breach; South Dakota circuit courts hold jurisdiction over probate matters in the county where the decedent resided.