Section 99
No decree to be reversed or modified for error or irregularity not affecting merits or jurisdiction
Part VII: Appeals
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.]
The Code of Civil Procedure, 1908 (Act No. 5 of 1908). From the updated text on India Code, with later amendments. Being checked against the official copy; amendment notes are not shown yet.