(1) A liability is a registrable overseas maintenance liability if it is:
(a) a liability of a parent or step - parent of a child to pay a periodic amount for the maintenance of the child; and
(b) an overseas maintenance liability.
(2) A liability is a registrable overseas maintenance liability if it is:
(a) a liability of a party to a marriage to pay a periodic amount for the maintenance of the other party to the marriage; and
(b) an overseas maintenance liability.
(3) A liability is a registrable overseas maintenance liability if it is:
(a) an agency reimbursement liability; or
(b) a penalty, within the meaning of a provision that is prescribed by the regulations, of an international treaty that is so prescribed, that is payable under the law of a foreign country that is a party to the treaty.
(4) A liability is a registrable overseas maintenance liability if it is an amount that is in arrears under a liability mentioned in subsection (1) or (2) or paragraph (3)(a).
(5) This section is subject to section 19.