The Multi Commodity Exchange of India Ltd (MCX) has issued a detailed clarification on the system issue that led to a nearly four-hour delay in trading earlier this week, assuring market participants that core trading systems remained stable and that corrective actions have already been implemented.

In a statement, MCX said the primary root cause of the October 28 disruption was traced to pre-defined parameter limits linked to reference data, including Unique Client Code (UCC) thresholdswhich led to a system constraint once the threshold was breached. “We have taken steps to address the constraints to prevent similar issues in the future,” the exchange noted, adding that no malfunction occurred in the main trading engine.

The exchange emphasised that its trading infrastructure is “well positioned to support market volumes and growth” and reiterated its commitment to investing in advanced technology to enhance reliability and scalability. “We remain committed to strengthening operational robustness and will continue investing in cutting-edge technology,” it said, thanking members and stakeholders for their support and patience.

The clarification comes after MCX’s trading resumption on Tuesday, October 28, was delayed, leading the exchange to conduct a special session from 1:20 PM to 1:24 PM, followed by normal trading from 1:25 PM. MCX, which commands nearly 98% market share in India’s commodity derivatives segmentis the country’s largest electronic commodity exchange, offering trade in bullion, energy, metals, agri commodities, and sectoral indices.

Meanwhile, the BSE has sought an official response from MCX after a media report highlighted the technical glitch and delay in market opening. The exchange’s reply is awaited.

MCX said it will continue to enhance system resilience and ensure seamless trading operations to support India’s fast-growing commodity markets.