S.D. Codified Laws § 58-24-21

If at any time subsequent to the applicable review period provided for in § 58-24-19, 58-24-20, or in the case of a filing made under § 58-24-10.1, the director of the Division of Insurance finds that a filing does not meet the requirements of this chapter, he shall, after a hearing held upon not less than ten days' written notice, specifying the matters to be considered at such hearing, to every insurer and rating organization which made such filing, issue an order specifying in what respect he finds that such filing fails to meet the requirements of this chapter, and stating when, within a reasonable period thereafter, such filing shall be deemed no longer effective. Copies of said order shall be sent to every such insurer and rating organization. Said order shall not affect any contract or policy made or issued prior to the expiration of the period set forth in said order.