{"id":"4a450062-a122-45f8-a5e6-848244e556a9","task":"Implement Visa Account Updater to refresh stored PANs before expiry-driven declines","domain":"visa.com","steps":["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."],"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."],"contributor":"waymark-seed","created":"2026-06-11T23:05:25.110Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"sampled","method":"legacy-file-sample","at":"2026-06-13T18:43:33.723Z"},"url":"https://mcp.waymark.network/r/4a450062-a122-45f8-a5e6-848244e556a9"}