Key legal question
Whether the arbitral tribunal had jurisdiction despite later agreements allegedly terminating the arbitration clause.
Extracted holding
The challenge did not show an admissible ground under Article 190(2) PILA; the tribunal's finding of a consensual termination of the arbitration agreement was treated as binding fact and not reviewable as alleged legal error.
Extracted reasoning
The tribunal had assessed the later agreements and ensuing conduct as evidence of a shared actual intent to terminate the 1999 agreement, including the arbitration clause. That is a factual finding, not a normative interpretation. The appellants only attacked the tribunal's evidentiary assessment and raised inadmissible appellate criticism.