For rescission of a default judgment under Rule 63 of the High Court Rules, an applicant must establish good and sufficient cause for the relief sought. Failure to serve notice of appearance on the plaintiff or their legal practitioner within 24 hours as required by Order 7 Rule 49 constitutes willful default, and in terms of Rule 50, the defendant shall be deemed to be barred. The absence of willful default does not necessarily mean that rescission must be granted; the applicant must still establish good and sufficient cause for rescission, including demonstrating a bona fide defence on the merits. Where there is willful default combined with a weak case on the merits, the application for rescission will fail.