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-317	Included `<ProductID>` in the Cardholder XML report.	Cardholder XML Report Guide	24th August 2026
PRN-316	Added enhanced validation the Additional_Data_DE48 field, where if Mastercard indicates that systemic controls were not applied then Thredd will automatically decline the transaction. This is shared with the customer using sub-element 71 (SE71) field.	EHI Guide (XML) EHI Guide (JSON)	17th September 2026
PRN-318	Added `IsTaken`, `FromDate`, `ToDate`, and `ProductIDs` optional fields to the Ws_List_Pending_Fees endpoint request. Updated the description for Action Code 666.	Web Services Guide	22nd September 2026
PRN-308	Added new `P73` Scheme Transaction Identifier Values to support merchants enrolled in the Global Reach Acquiring Program.	EHI Guide (XML) EHI Guide (JSON)	23rd October 2026
PRN-310	Added new `C09` and `F09` Scheme Transaction Identifier Values.	EHI Guide (XML) EHI Guide (JSON)	23rd October 2026
PRN-311	Added MCCs `3306`, `3884`, `3885` and `3886` to Merchant Category Codes.	EHI Guide (XML) EHI Guide (JSON)	23rd October 2026