OneClearstream rollout documentation
The OneClearstream service rollout related client documentation can be found consolidated on this page by topic and market.
Further documentation will be added as more market links are activated.
Clients can obtain details on specific T2S In-CSD securities accepted in OneClearstream by means of a simple query via the Clearstream Codelist - Securities Database.
For Local Market Partner (LMP)-specific search criteria please refer to Announcement C20056.
OneClearstream service description
Clients with CBF CASCADE accounts should refer to:
- The OneClearstream Client Handbook that describes the OneClearstream asset servicing processes for clients of Clearstream Banking Frankfurt using the OneClearstream service.
- The
OneClearstream Asset servicing - CBF issued securities
document that describes the OneClearstream asset servicing processes for CBF as the Issuer-CSD.
Note: As part of the Corporate Action Harmonisation (CAH) Project Phase 1 as of 3 July 2023, asset servicing for CBF-issued securities has been upgraded to OneClearstream Asset Servicing level (CAH – KADI DE migration to OneCAS) and is mandatory for all clients with CBF, CBF-i and CBL accounts. This applies only to migrated CBF-issued securities and respective events.
In Phase 2, as of 1 July 2024, asset servicing for CBF-issued securities that are investment funds, individual certificates, non-DE taxable country or non-T2S eligible will be upgraded to OneClearstream Asset Servicing (OneCAS) level (CAH Project KADI DE funds migration Phase 2 to OneCAS) and will become mandatory. For details, clients should refer to the respective announcements and Detailed Functional Specifications which are provided below in the market-specific migration information for the German market.
Clients with CBL or CBF-i accounts are informed about the changes to the existing services via Release information and dedicated announcements.
Subscription forms
- Xact Web Portal application form - CBF
- Xact Web Portal application form - CBL
- OneClearstream asset services options order form
Xact Web Portal documentation
Documentation and video tutorials can be found on the Xact Web Portal documentation page.
Market-specific migration information
Slovenia – OneClearstream service activation for Klirinško depotna družba d.d. (KDD)
Activation date: November 2024
The exact date of the OneClearstream service activation will be confirmed in due course.
The service will be activated for securities issued by KDD. Hence, all Slovenian securities will be eligible in Clearstream Banking AG (CBF) and LuxCSD S.A. All Slovenian ISINs will receive NCSC-T status in T2S for CBF.
CBF accounts | CBL or | |
Announcements | D24035: Slovenia: OneClearstream service activation for KDD | |
Impacted ISINs | will be published in due course | |
Ireland – OneClearstream service activation for Euroclear Bank
Activation date: 21 October 2024
The OneClearstream service will be activated for Irish securities issued by Euroclear Bank and therefore those securities will be eligible in Clearstream Banking AG (CBF) and LuxCSD S.A for settlement in CBF-T2S with the Non-Collective Safe Custody (NCSC-T) status.
CBF accounts | CBL or | |
Announcements | D24036: Ireland: Opening of a direct link to Euroclear Bank and OneClearstream service activation | C24043: Ireland: Opening of a direct link to Euroclear Bank and OneClearstream service activation |
Impacted ISINs | will be published in due course | |
Slovak Republic – OneClearstream service activation for Centrálny depozitár cenných papierov SR (CDCP)
Activation date: 18 March 2024
The OneClearstream service will be activated for securities issued by CDCP. Hence, all Slovak securities will be eligible in Clearstream Banking AG (CBF) and LuxCSD S.A. All Slovak ISINs will receive NCSC-T status in T2S for CBF.
Finland – OneClearstream service activation for Euroclear Finland
Activation completed (27 November 2023)
The OneClearstream service will be activated for securities issued by Euroclear Finland (EFi). Hence, all Finnish securities will be eligible in Clearstream Banking AG (CBF) and LuxCSD S.A. All Finnish ISINs will receive collective safe custody (CSC) status.
Clearstream Banking will continue to access the Finnish market via Clearstream Banking S.A.'s (CBL's) direct link to Euroclear Finland.
CBF accounts | CBL or | |
Announcements | D23027: Finland: OneClearstream service activation for Euroclear Finland – Update | C23018: Finland: OneClearstream service activation for Euroclear Finland – Update |
Impacted ISINs | ||
Germany – Mandatory asset servicing upgrade to OneClearstream asset servicing level (CAH – KADI DE migration to OneCAS)
CAH Project Phase 1 completed (3 July 2023)
CAH Project Phase 2 planned for 1 July 2024
CBF accounts | CBL or | |
Cut-over announcements | C22009: "Harmonisation of Clearstream Banking’s asset services" - Update | |
Detailed Functional Specifications | CAH KADI DE Migration to OneCAS - Detailed Functional Specifications | |
Client simulation | CAH KADI DE Funds Migration to OneCAS - Client Simulation Registration Form Corporate Actions Harmonisation - KADI DE Funds Migration to OneCAS - Client Simulation Guideline | |
Migration Guide | Corporate Action Harmonisation – KADI DE Migration to OneCAS Phase 2 – Client Migration Guide | |
Impacted ISINs | ||
Eurobonds – activation completed
Activation date Step 1: 22 March 2021
Activation date Step 2: 19 April 2021
CBF accounts | CBL or CBF-i accounts | |
Cut-over announcement | C20043: "Eurobonds eligibility in T2S - Phase 2 - update" | |
Impacted ISINs | ||