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System outage disrupts credit card payments across Japan

Major Japanese credit card issuers Mitsubishi UFJ NICOS and Sumitomo Mitsui Card experienced a system outage on 16 July, disrupting card payments at merchants nationwide and blocking transit app transactions via credit card functions. Root cause remains under investigation.

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The Wire takeaway

Japan's payment infrastructure just failed at scale during business hours - two of the country's largest card networks went down simultaneously. If you're building redundancy, failover, or alternative payment rails into Japanese commerce or transit, you now have a concrete proof-of-concept that the current system can't absorb a single point of failure.

Read the full story at sinardaily.my

Topics: Fintech · payment-systems · outage · resilience · japan-fintech · critical-infrastructure

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Verified 16 July 2026 · Sources: Fusion42 review