Changelog 2/27/26
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codeUCAF Response Field documentation has been updated including Visa, Mastercard, and Discover (Coming Soon) descriptions. For different networks refer to the following:
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The TabaPay Developers Postman Collection is now live. Existing clients with access to Sandbox can now fork the Postman Collection and get started with testing their use cases with different examples. For an introduction to Postman, refer to Test Your Use Case with Postman.
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The Starter Guide has been published to guide new clients and prospects with an intro to payments and TabaPay topics to help get started.
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Multiple bulletins has been posted regarding Visa and Mastercard updates. Refer to the following network bulletins for more information.
Mastercard -
Mastercard fees for authorizations declines due to insufficient funds. For clients accepting Mastercard payments or subscriptions, refer to Mastercard Authorization Optimizer Service Fee.
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Mastercard is launching a pilot for the Identity Check Approved Merchant List impacting liability shift for Mastercard 3DS transactions to help detect and block "ghost" merchants and fraud.
Visa -
Commercial Enhanced Data Program 2026 Update to promote enhanced data integrity for Product 3 (Level 3) transactions.
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Updates to OCT Data Requirements including Purpose of Payment, Data of Birth and Sender Address.
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Visa is expanding Visa Flexible Credential (VFC) transactions from domestic-only transactions to now include cross-border transactions
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$0 authorization messages are now subject to the Visa Stop Payment Service (VSPS) Repeat Authorization Decline Fee
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Visa will no longer issue new Visa+ paynames (tags) moving forward. PayPal and Venmo will discontinue Peer-to-Peer (P2P) transfers between their platforms using Visa+ paynames, however this does not affect your ability to originate payouts to these wallets. Due to this strategic shift, TabaPay will discontinue onboarding new clients to the legacy Visa+ solution.