Parties may exclude access to their procurement opportunities from suppliers of another Party if:
(a) the other Party has a comparable entity that is not subject to the obligations of Chapter Five by virtue of coverage under Annex 502.1A, 502.3, or 502.4;
(b) the other Party's comparable entity has excluded or impaired access to its procurement opportunities; and
(c) consultations have failed to resolve the matter.
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20 The former article was replaced with the current article by means of the Sixth Protocol of Amendment.