S.D. Codified Laws § 58-5A-38.2

If the insurer fails to comply with an order made pursuant to § 58-5A-38.1, the director may examine the registered insurer's affiliates to obtain the information. The director may issue subpoenas, administer oaths, and examine under oath any person for purposes of determining compliance with the provisions of §§ 58-5A-37 to 58-5A-40, inclusive. Each person is obliged to attend as a witness at the place specified in the subpoena, if the witness is subpoenaed within this state. The witness is entitled to the same fees and mileage, if claimed, as a witness in appearing in any state court and the fees shall be itemized and paid by the insurer being examined.