Article 273

No irregularity other than one arising from an alleged want of material jurisdiction or one alleged in a judgment may be taken as a ground of appeal.

Notwithstanding the previous sub-Article, an Appellate Court may, at any time on its own motion, correct any irregularity having occurred in the proceedings in which the judgment appealed from was given: provided that, where the irregularity was such as to prevent a valid judgment from being given, the proceedings in which judgment was given shall be quashed and the Appellate Court shall order the retrial of the case.