A plea in bar, as an alternative to pleading to the merits, must raise matters of substance that do not involve going into the merits of the case. A plea in bar that is predicated on the denial of facts pleaded in the declaration and raises defences on the merits of the dispute is impermissible and will be dismissed. Parties cannot use a plea in bar as a vehicle to dispute the factual and substantive merits of a claim. Where a party contends there is no cause of action, the proper procedure is to file an exception under Rule 42(1)(b) of the High Court Rules, 2021, not a plea in bar.