In this Part, debt means:
(a) a debt recoverable by the Commonwealth under Part 5.2; or
(b) a debt under the 1947 Act; or
(c) a debt due to the Commonwealth under a scheduled international social security agreement; or
(d) a debt under the Social Security (Fares Allowance) Rules 1998 .
Note: Overpayments under section 1228 are not debts for the purposes of Part 5.2.