K.S.A. 72-2631

In case an error has been made and an annuitant has been paid more or less than he is entitled to receive, and other satisfactory arrangements cannot be made, the board, insofar as that may be possible, shall adjust future annuity payments so as to correct the error, in accordance with actuarial computations: Provided, That no adjustment shall be made for an error in the service record not corrected as provided in K.S.A. 72-5511 .