According to Sumitomo Mitsui Banking Corporation, a system failure occurred around 5:30 pm on the 30th, making it difficult to use some services.
Specifically, it is difficult to use cash cards and credit cards at ATMs at convenience stores, cashless payment services for smartphones, and debit cards.
This is due to the unstable connection between the bank's core system and the ATM, and there is no prospect of recovery.
Banks are investigating the scale and causes of failures and are rushing to recover.