Contractual provisions requiring notices to be given by certified mail or registered post, or specifying particular content for notices of breach and termination, are facultative rather than mandatory where the purpose of the provision (ensuring receipt and comprehension) has been achieved; non-compliance does not invalidate an otherwise effective notice. The CTTT had no power to award pre-determination interest under cl 49 of the CTTT Regulation 2009. In supervisory jurisdiction under s 69 of the Supreme Court Act 1970 (NSW), the Court of Appeal can substitute the only order available in law rather than merely quashing and remitting, though this question remains contested within the Court.
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