SDCL § 55-3-28: Terms of trust may be reformed by court.

On petition by a trustee or beneficiary, the court may reform the terms of the trust, based upon a showing by the preponderance of the evidence and without any preliminary showing of an ambiguity, to conform to the trustor's intention if the failure to conform was due to a mistake of fact or law or a scrivener's error and the trustor's intent can be established. The terms of the trust may be construed or modified, in a manner that does not violate the trustor's probable intention, to achieve the trustor's tax objectives.