Section 23. Statements of claim and defence

23. Statements of claim and defence.— (1) Within the period of time agreed upon by the parties or determined by the arbitral tribunal, the claimant shall state the facts supporting his claim, the points at issue and the relief or remedy sought, and the respondent shall state his defence in respect of these particulars, unless the parties have otherwise agreed as to the required elements of those statements. (2) The parties may submit with their statements all documents they consider to be relevant or may add a reference to the documents or other evidence they will submit. 1[(2A) The respondent, in support of his case, may also submit a counterclaim or plead a set-off, which shall be adjudicated upon by the arbitral tribunal, if such counterclaim or set-off falls within the scope of the arbitration agreement.] 23. The arbitrator's law firm has within the past three years acted for one of the parties or an affiliate of one of the parties in an unrelated matter without the involvement of the arbitrator.