26-5B-203. Jurisdiction to modify determination.Except as otherwise provided in §26-5B-204, a court of this state may not modify a child-custody determination made by a court of another state unless a court of this state has jurisdiction to make an initial determination under §26-5B-201(a)(1) or (2) and:(1)The court of the other state determines it no longer has exclusive, continuing jurisdiction under §26-5B-202 or that a court of this state would be a more convenient forum under §26-5B-207; or(2)A court of this state or a court of the other state determines that the child, the child's parents, and any person acting as a parent do not presently reside in the other state. Source: SL 2005, ch 137, §15.
South Dakota Legal Code