(1) A senior office holder of a registered party must not fail, without reasonable excuse, to report to the Commission, in writing, any conduct in connection with the party that the office holder knows, or ought to have known, constitutes a contravention of this Act.Penalty: Fine not exceeding 50 penalty units.(2) Without limiting subsection (1) , it is a reasonable excuse for a person to fail to report conduct under that subsection if the person knows, or ought to have known, that a report of the conduct has already been made to the Commission.