What Changed
When KOMOJU verifies a card without charging it, the check now uses a 0 JPY authorization instead of a 1 JPY authorization. This applies, for example, when a card is saved to a customer for subscriptions.
Some issuers, such as certain debit card issuers, decline 0 JPY authorizations. For those cards, KOMOJU retries with a 9 JPY authorization and cancels it immediately.
Verifications at 0 JPY do not appear in the Merchant Dashboard. The 9 JPY fallback authorizations remain visible, in the same way 1 JPY authorizations were shown before.
Merchant Impact
No integration or configuration changes are needed. Debit and prepaid cardholders who save a card no longer see a temporary 1 JPY deduction or a charge notification.