Scheduled Pre-Release Notifications (PRNs)

Refer to the table below for details of the latest Thredd Pre-Release Notifications (PRNs) and the scheduled system release dates for scheduled releases. For previous pre-release notifications, see Pre-Release Notifications for Past Releases

This page displays PRNs with changes affecting the technical documentation. For a full list of PRNs, including PRNs prior to 2021, please contact the Operations team.

PRN Reference

Description

Related Guides

Scheduled Release

PRN-272

Included new Merchant Category Codes (MCCs) for Visa and Mastercard compliance with ISO standards.

EHI Guide (XML)

EHI Guide (JSON)

16th April 2026

PRN-289

Removed support for CVV2 result codes C, D, K, and L to align with Visa’s updated Field 44.10 CVV2 response code mandate.

EHI Guide (XML)

EHI Guide (JSON)

17th April 2026

PRN-284

Added R0, R1 and R3 response codes to support VISA subscription management.

EHI Guide (XML)

EHI Guide (JSON)

18th April 2026

PRN-262

Updated the behaviour for phone number validation to clean all characters with the exception of letters.

Web Services Guide

20th April 2026

PRN-285

Added the following new sub-elements to the Clearing and Non-Clearing Global Transaction Reports: <Traceid_Lifecycle> and <VATAmt>.

Global Transaction Reporting Guide

5th May 2026