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Marqeta rolls out Card Issuing and Processing platform releases in phases. If you don’t see a feature in your environment yet, you will after Marqeta updates your environment to the new version. Platform release numbers, such as V.2026.8.31.0, identify the release, not the date it becomes available.
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New evidence collection requirements for disputes

Action requiredBreaking changeMarqeta is implementing new evidence collection requirements for dispute events under Regulation E. These requirements vary by program type and are only applicable to programs that are Managed by Marqeta or hybrid.
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Added support for Mastercard BIN attack flag in 3D Secure requests

In compliance with Mastercard’s updated requirements, Marqeta now enables card programs to reject 3D Secure (3DS) transactions that Mastercard has flagged as BIN attacks. When Mastercard flags a transaction as a suspected BIN attack, card programs will receive a 3DS completion webhook with transaction_reason = NETWORK_SUSPECTED_BIN_ATTACK.For more information on 3DS webhooks, see 3D Secure transition events.

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New optional field in the Transactions API

Marqeta has added a new optional field called outgoing_response_code to the network_metadata object in the Transactions API. This field allows card networks to expose the network response code in transaction payloads.For more information, see Transactions.
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Platform release V.2026.1.19.0

The V.2026.1.19.0 release of the Marqeta platform contains infrastructure improvements and backend issue fixes only. There are no customer-facing enhancements or fixed issues in this release.

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Platform release V.2026.1.5.0

The V.2026.1.5.0 release of the Marqeta platform contains infrastructure improvements and backend issue fixes only. There are no customer-facing enhancements or fixed issues in this release.