(1) A government certificate in relation to a kind of goods takes effect:
(a) on the date it is issued; or
(b) if a later date is stated in the certificate--on that later date.
(2) A government certificate that relates to a single consignment of goods remains in force until the earlier of the following:
(a) any expiry date specified in the certificate;
(b) the day the certificate is accepted, or rejected, by the importing country.
(3) A government certificate that relates to 2 or more consignments of goods remains in force until the earliest of the following:
(a) any expiry date specified in the certificate;
(b) the day any consignment of the goods is rejected by the importing country;
(c) the day on which the last consignment of the goods is accepted by the importing country.
(4) Despite subsections (2) and (3), a government certificate in relation to a kind of goods ceases to be in force if:
(a) the goods are no longer intended to be exported to the country in relation to which the certificate was issued; or
(b) the certificate is revoked; or
(c) circumstances prescribed by the rules exist.