SDCL § 5-9-16: Assignment or conveyance under installment contract--Approval required--Form--Filing fee.

Any assignment of any rights under such contract, or conveyance of any interest in the lands therein described is ineffective until such assignment or conveyance is first approved, in writing, by the commissioner of school and public lands. The commissioner shall prescribe the form to be used for such assignment or conveyance and shall fix a reasonable fee for filing, recording, and approval of it.