(a) In the given facts, it was appropriate for Mr XT to proceed by way of action procedure rather
than application procedure. An action is the correct procedure where disputes of fact are
foreseeable and where the matter will ultimately be resolved through a trial with oral evidence and
cross-examination. A claim for arrear rental arising from a commercial lease is a typical contractual
dispute in which the defendant may raise factual defences, such as payment, cancellation, or
breach by the lessor, making motion proceedings unsuitable. The fact that the matter is defended
and that the parties are preparing for trial confirms that material disputes of fact exist or are
anticipated. Application proceedings are generally reserved for cases where the facts are common
cause or easily ascertainable from affidavits, which is not the case here. Marnewick explains that
once litigation is properly instituted by action, interlocutory disputes that arise during the
preparation for trial must be dealt with within that procedural framework rather than by
converting the matter into motion proceedings (Marnewick, C.G., 2024, pp. 167–168).
(b) Because the matter is properly before court by way of action proceedings, the correct process
to be used by Mr XT is an interlocutory application in terms of Rule 35(7), brought on notice of
motion within the existing action. Rule 35 regulates discovery in action proceedings and is designed
to ensure procedural fairness and prevent trial by ambush. Where a party fails to comply with its
discovery obligations, Rule 35(7) allows the prejudiced party to approach the court for an order
compelling discovery or, alternatively, for the non-compliant party’s claim or defence to be struck
out. The interlocutory application will be initiated by a notice of motion supported by a founding
affidavit setting out the history of discovery, the relevance of the undisclosed documents, and the
prejudice suffered by Mr Mark in preparing for trial. As this application does not seek final relief on
the merits but merely enforces procedural compliance, it is classified as an interlocutory
proceeding ancillary to the action. Marnewick notes that interlocutory applications of this nature
are essential case-management tools within action proceedings and are specifically designed to
facilitate a fair and efficient trial process (Marnewick, C.G., 2024, pp. 185–187).