Grounds
170 Subject to section 168, every decision of a Tribunal is final and conclusive and is not to be questioned or reviewed in any court except in accordance with the Federal Courts Act on the grounds referred to in paragraph 18.1(4)(a), (b) or (e) of that Act.
Source
https://laws-lois.justice.gc.ca/eng/acts/C-15.1/section-170.htmlCanonical document at the regulator. Always cite this URL — not the Vantage detail page — in compliance evidence.