If an amount is payable to the Commonwealth or another State or Territory
under this section, then the Attorney-General must cause the amount to be paid
to the Commonwealth or the other State or Territory in the period that
is—
(a) the
period specified in the NCSUW agreement as being the payment period for the
purposes of the national cooperative scheme; or
(b) if
paragraph (a) does not apply—the period prescribed by the
regulations as being the payment period for the purposes of the national
cooperative scheme.