(1) If:
(a) a supplier has reason to believe that:
(i) a relevant Commonwealth entity; or
(ii) an official of a relevant Commonwealth entity;
has engaged, is engaging or is proposing to engage, in any conduct in contravention of the relevant Commonwealth Procurement Rules (so far as those rules relate to a covered procurement); and
(b) the interests of the supplier are affected by the conduct;
the supplier may make a written complaint about the conduct to the accountable authority of the entity.
(2) A supplier may withdraw a complaint made by the supplier under subsection (1).