Automatic updates have important limits
An account updater is a participant-based payment service, not a guarantee that every expired card will refresh. Availability can depend on the card network, issuer, acquirer, processor, gateway, merchant enrollment, transaction type, region, account status, and the way the credential is stored. Visa's current documentation also identifies account-closure and contact-cardholder responses, which shows why merchants should treat an updater result as operational information rather than proof that a future payment will be approved.
Cardholder preferences can matter as well. Visa documents an opt-out path under which new information is not shared with participating merchants and the cardholder must update merchants directly. A business should therefore provide a clear manual update path even if its provider offers an automatic updater.
Ask the processor or gateway that controls the stored credential whether an updater is enabled for the merchant account, which card brands and transaction types it covers, how updates appear in reporting, and what staff should do when the response says to contact the cardholder. Do not describe the feature to customers as universal or promise uninterrupted billing.