SDCL § 3-12C-217.2: Domestic relations orders--Prospective provisions--Errors.

The provisions of a qualified domestic relations order are prospective from the date of the order. Any division of benefits paid prior to the date of the order, service of the order upon the system, or qualification of the order by the system, whichever is later, must be the responsibility of the parties to the order. The executive director may agree to adjust future payments to remedy an error in prior payments, if the error in prior payments involved the system.