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India's Unified Payments Interface (UPI) experienced its longest downtime in over three years on April 12, lasting approximately five hours due to banks flooding the system with excessive transaction status check requests.
According to the National Payments Corporation of India's (NPCI) root cause analysis, the outage stemmed from a critical technical oversight - the absence of a transaction status check limiter in the system's architecture.
timesofindia.indiatimes.com
According to the National Payments Corporation of India's (NPCI) root cause analysis, the outage stemmed from a critical technical oversight - the absence of a transaction status check limiter in the system's architecture.

NPCI reveals the reason behind the ‘longest’ UPI outage: “The issue was caused by …” - The Times of India
TECH NEWS : India's UPI experienced a five-hour outage due to banks excessively checking transaction statuses, overwhelming the system. NPCI's investigation revea
