The case confirms that the essential inquiry in certiorari proceedings is to identify the task committed by Parliament to the decision-making body; error in deciding a matter so committed does not constitute jurisdictional error unless the body's exercise of power is thereby affected. The 'record' for error of law on the face of the record, as extended by s 10 of the Administrative Law Act 1978 (Vic), includes only the reasons of the body whose decision is under challenge, not those of a subordinate decision-maker except to the extent necessary to understand the reviewing body's reasons.
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