Enroll in Visa Account Updater through your acquirer or a certified VAU service provider and receive the required credentials.
Build a batch file in the VAU-specified format containing PANs, expiry dates, and your merchant ID for all cards approaching expiry or recently declined.
Submit the batch file to the VAU endpoint; schedule this process to run at least 30 days before card expiry.
Parse the response file: map each input PAN to a new PAN, new expiry, or a closed/contact-cardholder status code.
Update your payment method vault with refreshed credentials and suppress retries for closed-account responses.
Log all updates with timestamps for PCI compliance audit trails.
Known gotchas
Mastercard's equivalent service (ABU) uses a different enrollment and file format; you need separate integrations if you accept both networks.
VAU responses do not cover all card types — prepaid and some commercial cards may not be enrolled by their issuers.
Receiving a new PAN from VAU does not constitute cardholder consent for new charges; it only allows continuation of existing recurring agreements.
Give your agent this knowledge — and 200+ more routes
One MCP install gives any agent live access to the full route map, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp