Unified for New Opportunities rollout documentation
Reference
UNIFIED FOR NEW OPPORTUNITIES
The rollout related client documentation can be found consolidated on this page by topic and market.
Further documentation will be added once more markets have been activated.
In case of any questions, clients may contact the project via UNO@clearstream.com or their Relationship Manager.
General documentation
Topic | Document |
Announcements | CEU extending its service offering by making further markets T2S eligible CEU erweitert ihr Dienstleistungsangebot, indem sie weitere Märkte T2S-fähig macht |
Detailed Business Specifications | Information will be provided in the course of November 2025. |
Tax announcement | Tax certification duplication process: From 6-series accounts to CEU: From 6-series accounts to CBL: |
FAQ Document | |
Connectivity workshop | This session took place on 14 November 2025. Premium users can access the slides here. |
Market-specific information
Wave 1: December 2025 (Norway and Australia)
- ISIN “T2S” Activation: 12 December 2025.
- All German stock exchange trades concluded from 12 December 2025 (Trade Date) will settle on CEU accounts.
Topic | Document |
Detailed Functional Specifications: Norway and Australia | Unified for New Opportunities - Detailed Functional Descriptions |
Tax forms and certification | For CEU clients: Unified for New Opportunities - Norway - New tax forms for Clearstream Europe AG clients Unified for New Opportunities - Australia - New tax forms for Clearstream Europe AG clients For CBL clients: The current is still applicable: Tax Forms to use - Norway The current is still applicable: Tax Forms to use - Australia |
Client Test | Clients are invited to test the optional UCSA service from 27 August to 10 September 2025. Please register by 25 August 2025 by sending your request using the following link. We are opening a second testing window to clients interested in testing the optional UCSA service from 20 October to 3 November 2025. Please register under the bellow link by 22 October 2025. Registrations received after this date will be processed on a best-effort basis (clients registered in previous testing window in August can continue testing without further need to register). Note: The test environment will be unavailable for three weeks starting 26 September 2025 opening to clients as of 20 October 2025 again. Client Testing for the first wave in December 2025 will begin on 3 November 2025. Please register by 27 October 2025 Further details will be communicated in due course. For any other testing-related inquiries, please contact |
Summary Session 2 | The session took place on 16 September 2025. Premium users can access the slides and the recording here. |
Market activation announcements | Unified for New Opportunities: Wave 1 market activation for Norway and Australia Unified for New Opportunities: Wave 1 market activation milestones for Norway and Australia |
Impacted ISINs | Updated ISIN lists will be published several times: 1 month, 2 weeks and 1 day before the market activation date. |
Wave 2: (USA, Canada and Switzerland)
- ISIN “T2S” Activation and update to custody type "NCSC-T": 1 June 2026
- All German stock exchange trades concluded from 1 June 2026 (Trade Date) will settle on CEU accounts.
Please note that all active CSC ISINs for these markets will also be in scope. They are already active in T2S, and the German Stock Exchange is already settling in CEU. Their custody type will change to NCSC-T, OneCAS will be activated and new domestic security CSD links to DTCC and SIX SIS via CBL will be valid from 1 June 2026.
Topic | Document |
Detailed Functional Specifications: USA, Canada and Switzerland) | Unified for New Opportunities - Detailed Functional Descriptions |
Tax forms and certification | General information for U.S.A: Unified for New Opportunities - U.S.A - New tax forms for Clearstream Europe AG clients For CEU clients: Tax Forms to use - U.S.A. - CEU For CBL clients: |
