21Restriction on appeals

#### 21 Restriction on appeals 21 Restriction on appeals > > (1) A certificate given, or declaration made, under section 17 or an order made under section 18 shall not be challenged, appealed against, quashed or called into question by any court, except as provided by sections 22, 23 and 24. > > > (2) An order made under section 19 shall not be challenged, appealed against, quashed or called into question by any court except in accordance with the [Industrial Relations Act 1996](/view/html/inforce/current/act-1996-017). > > > (3) Except as provided by subsection (2), no proceedings, whether for an order in the nature of prohibition, certiorari or mandamus or for a declaration or injunction or for any other relief, shall lie in respect of— > > > > > (a) a certificate given, or declaration made, under section 17 or an order made under section 18 or 19, or > > > > > (b) any decision, proceeding, step or other matter involved in the giving or making of any such certificate, declaration or order. > > **s 21:** Am 1991 No 34, Sch 3; 1996 No 17, Sch 5.