created since the date of commencement of this Act and are in the possession of the public authority; (b) within 12 months after publication of the statement required under paragraph (a) and thereafter at intervals of 12 months, cause to be published in the Gazette, statements bringing up to date the information contained in the previous statement or statements. (3) The public authority may not comply fully with paragraph (2)(a) before the expiration of 12 months from the date of commencement of this Act, but it shall, before that time, comply with that paragraph as far as is practicable. (4) This section does not require a document of the kind referred to in subsection (1) containing exempt information to be referred to in a statement published in accordance with subsection (2)(a), if the fact of the existence of the document cannot be referred to in the statement without exempt information being disclosed. (5) Where a public authority comes into existence on or after the date of commencement of this Act, subsections (2) and (3) shall apply in relation to that public authority as if the references in those subsections to the date of commencement of this Act were references to the date the public authority so comes into existence. Notice requiring specification of document in statement 24. (1) A person may serve upon a public authority a notice, in writing, stating that, in the opinion of the person, a statement published by the public authority under section 22(2) or section 23(2) does not specify a document as described in section 22(1) or 23(1) that was required to be specified in the statement. (2) The public authority shall (a) make a decision within 21 days of receiving a notice and publish the decision in relation to the document referred to in subsection (1), no later than seven days thereafter in the Gazette; and (b) cause the person to be given notice in writing of its decision. 19