SDCL § 21-40-3: Addition of parties defendant for more complete settlement.

When in any action under this chapter it appears to the court that any owner, lien holder, or person interested in any of the tracts involved ought, for a full settlement and adjudication of all the questions involved, to be made a party, the court shall stay the proceedings in said action and order that they be made parties defendant and be served with the summons therein.