18. (1) Before the prescribed date, a notice under section 17 shall—
(a) include a statement to the effect that, subject to the Administrative Appeals Tribunal Act 1989 , an application may be made to the Tribunal for a review of the decision to which the notice relates; and
(b) except where subsection 26 (11) of that Act applies—include a statement to the effect that a person whose interests are affected by the decision may request a statement pursuant to section 26 of that Act.
(2) The validity of a decision referred to in section 17 shall not be taken to have been affected by a failure to comply with subsection (1).
(3) On or after the prescribed date, a notice under section 17 shall be in accordance with the requirements of the Code of Practice in force under subsection 25B (1) of the Administrative Appeals Tribunal Act 1989 .
(4) In this section—