S.D. Codified Laws § 26-7A-46

If all persons and parties named in the summons and entitled to notice of hearing on the petition, including any attorney for the child, file a written request with the court that the child be declared to be an abused or neglected child, a child in need of supervision or a delinquent child, if all the parties voluntarily appear in court and orally waive notice of hearing on the petition, or if all the parties file with the court written waiver of notice on the petition, the court may proceed with the hearing on the petition with the concurrence of the parties.