T2S Release 3.3 – Introduction on 17 February 2020 – update


Note: This announcement, originally published on 25 October 2019, was updated to reflect the changed scope of the T2S Release. Changes have been highlighted.

Clearstream Banking AG, Frankfurtinforms customers about the upcoming TARGET2-Securities (T2S) Release 3.3. According to the T2S Release Concept, the resolution for various T2S Problem Tickets (PBIs) will be deployed on

Saturday, 15 February 2020
for the business day Monday, 17 February 2020

T2S Release 3.3 - Scope

Based on the T2S status reporting in October 2019, with the T2S Release 3.3, the resolution of 23 Problem Tickets is envisaged for a delivery in production.

CBF’s assessment related to these Problem Tickets shows that the fixes will not require software changes in CBF. More details are available in the attached file that provides the latest information about the related PBIs that might have impact on CBF’s customers acting in ICP and / or DCP mode. Customers are recommended to validate these scope elements and check whether operational and / or functional modifications in their procedures are required. Therefore, the file shows from the entire scope elements eleven PBIs that are already scheduled and will be deployed according to the T2S Service Transition Plan.

T2S Release 3.3 – Transition plan

The Market Infrastructure Board (MIB) will decide on the deployment of T2S Release 3.3 in production once the expected results have been shown during testing. On Tuesday, 4 February 2020, the final decision is to be made.

The deployment of T2S Release 3.3 into production is foreseen for the business day Monday, 17 February 2020. The implementation of the software will take place during the weekend within the T2S maintenance window. Meaning that currently no changes in the T2S Operational Day are expected; neither for the end of day (“EoD”) procedure on Friday, 14 February 2020, nor for the start of the business day, Monday, 17 February 2020.

The below table provides an overview of the important T2S milestones for the upcoming implementation.

T2S Service Transition Plan – Activity for T2S Release 3.3


Deployment to UTEST

Friday, 17 January 2020

End of testing of scope elements in UTEST

Wednesday, 29 January 2020

Final approval of deployment to Production by MIB

Tuesday, 4 February 2020

Deployment to Production environment

Saturday, 15 February 2020

Customer simulation

The simulation activities will be conducted in a “free simulation mode”. The already established static data for CBF accounts and the related connectivity settings in the CBF customer simulation environment (IMS23) remain unchanged.

Irrespective of whether CBF has to modify its software, CBF will maintain its link to the T2S Pre-Production environment (UTEST) so that customers can test on their demand. According to the ECB planning, the updated software will be installed on Friday, 17 January 2020 in UTEST. On this day UTEST and the connected test environments will be closed for the installation activities.


Please contact our Client Services teams for questions regarding the functionality. Questions related to the technical connection can be addressed to our Connectivity Support teams. Particular questions related to the T2S Release 3.3 will be routed to the experts of the T2S Settlement Functionality team.


1. This Announcement is published by Clearstream Banking AG (CBF), registered office at Mergenthalerallee 61, 65760 Eschborn, Germany, registered with the Commercial Register of the District Court in Frankfurt am Main, Germany, under number HRB 7500.