The Director-General may revoke the approval of an identification system—
(a) at the request of the system administrator; or
(b) if the identification system is not efficiently or effectively achieving any 1 or more of the purposes of section 50(2) of the Biosecurity Act 1993; or
(c) if 1 or more parts of the identification system are not being implemented by the system administrator; or
(d) if an identification system is being used by less than 5% of persons required to use an identification system; or
(e) if a significant proportion of users are not complying with the identification system.