The regulations in this subpart do not preclude an employee from requesting waiver of an overpayment under 5 U.S.C. 5584 or 8346(b) , 10 U.S.C. 2774 , 32 U.S.C. 716 , or under other statutory provisions pertaining to the particular debts being collected.
5 C.F.R. §1639.21