19State/Territory acts may be validated

19  State/Territory acts may be validated  (1) If a law of a State or Territory contains provisions to the same effect as sections 15 and 16, the law of the State or Territory may provide that past acts attributable to the State or Territory are valid, and are taken always to have been valid. Effect of validation of law  (2) To avoid any doubt, if a past act validated by subsection (1) is the making, amendment or repeal of legislation, subsection (1) does not validate:  (a) the grant or issue of any lease, licence, permit or authority; or  (b) the creation of any interest in relation to land or waters; under any legislation concerned, unless the grant, issue or creation is itself a past act attributable to the State or Territory.