S.D. Codified Laws § 5-7-27
The assignments provided for in § 5-7-26 shall be executed and acknowledged in duplicate in the manner prescribed for conveyance of real estate in this state, and subject to recordation as other instruments conveying real estate and, in addition thereto, a duplicate original shall be filed in the office of the commissioner of school and public lands who shall record same in permanent form in his office as a public record and shall return the original to the person entitled thereto after recording. The approval of the commissioner shall be noted upon all originals of the assignment. The commissioner shall prescribe the form to be used for such assignments and shall fix a reasonable fee for the filing, recording, and approval of the same.
SDCL 5-7-27