Section 99 of Code of Civil Procedure 1908 "No decree to be reversed or modified for error or irregularity not affecting merits or jurisdiction"
No decree shall be reversed or substantially varied, nor shall any case be remanded in appeal on account of any misjoinder or non-joinder of parties or causes of action or any error, defect or irregularity in any proceedings in the suit, not affecting the merits of the case or the jurisdiction of the Court.
Provided that nothing in this section shall apply to non-joinder of a necessary party.
Section 99A of Code of Civil Procedure 1908 "No order under section 47 to be refused or modified unless decision of the case is prejudicially affected"
Without prejudice to the generality of the provisions of section 99, no order under section 47 shall be reversed or substantially varied, on account of any error, defect or irregularity in any proceeding relating to such order, unless such error, defect or irregularity has prejudicially affected the decision of the case.