IN A SPOT: NSE shuts trading for about 4 hours over technical glitch

The Securities and Exchange Board of India (Sebi) has asked NSE to carry out a "detailed root cause analysis" of the stoppage and explain why trading didn’t migrate to the disaster recovery site.

from Wealth-Economic Times https://economictimes.indiatimes.com/wealth/personal-finance-news/in-a-spot-nse-shuts-trading-for-about-4-hours-over-technical-glitch/articleshow/81203288.cms