# Announcements and Release History source: https://developer.mastercard.com/automatic-billing-updater/documentation/change-log/index.md ## Customer Announcements {#customer-announcements} All announcements related terms of use, pricing, and other general information about the Automatic Billing Updater (ABU) service can be found in the [Technical Resource Center](https://trc-techresource.mastercard.com/) on Mastercard Connect. ## Release History {#release-history} This page contains a history of features implemented for ABU APIs and updates to ABU product and technical information published on Mastercard Developers. Changes for each release are detailed in the table below.
Refer to [Use Cases](https://developer.mastercard.com/automatic-billing-updater/documentation/usecases/index.md) for a functional explanation and [API Reference](https://developer.mastercard.com/automatic-billing-updater/documentation/api-reference/index.md) for technical details of API changes. | Release Date | Description | |------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | 02 April 2026 | Added new [application error](/documentation/codes-and-formats/#application-errors 400) (ReasonCode = `INVALID_PARAM`) for when a request is made with an unknown customer identifier (ICA not recognized). | | 31 March 2026 | Updated [API retry strategy](https://developer.mastercard.com/automatic-billing-updater/documentation/api-reference/index.md#notifications-api-retry-strategy) for outbound notifications sent for subscribed Mastercard Digital Enablement Service (MDES) network tokens. | | 11 February 2025 | Added DigiCert as a recommended Certificate Authority for authenticating ABU APIs. Mastercard is migrating the certicate authority (CA) used to issue public key cryptography certificates from Entrust to DigiCert. Add DigiCert certificates to your trust store. Refer to [GLB 11100 Mastercard Announces Move to DigiCert](https://trc-techresource.mastercard.com/r/bundle/m_an11100_en-us/page/d/en-US) and [GLB 11023 Automatic Billing Updater API Migration to DigiCert Certificate Authority](https://trc-techresource.mastercard.com/r/bundle/m_an11023_en-us/page/d/en-US) for details. | | 1 August 2024 | Reorganized [Use Cases](https://developer.mastercard.com/automatic-billing-updater/documentation/usecases/index.md) section for better clarity around Push and Pull models of integrating with ABU. Added experience design guides, created with Figma, to illustrate how merchants can integrate ABU into your cart checkout, billing, and customer profile management user experience journeys. For example, [here](https://developer.mastercard.com/automatic-billing-updater/documentation/usecases/push-subscription-model/index.md#subscribe-for-account-updates) is the guide for subscribing and receiving push notifications when account credentials are updated. | | 31 July 2024 | End of support for JSON-RPC API. | | 17 June 2024 | Aligned error response format of Mastercard API gateway errors to the format of application errors. All error responses you may expect to receive from ABU will follow a consistent format. Refer to [Error Codes and Payload Formats](https://developer.mastercard.com/automatic-billing-updater/documentation/codes-and-formats/index.md). |