OneClearstream rollout documentation

20.07.2023

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 CSD-in securities accepted in OneClearstream by means of a simple query via the Clearstream Codelist - Securities Database.

For LMP specific search criteria please refer to the 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. The activation of OneClearstream services for CBF-issued securities is optional.
    Note: As part of the Corporate Action Harmonisation (CAH) Project as of 3 July 2023, asset servicing for CBF-issued securities will be upgraded to OneClearstream Asset Servicing level (CAH – KADI DE migration to OneCAS) and becomes mandatory for all clients with CBF, CBF-i and CBL accounts. This applies only for migrated CBF-issued securities and respective events. 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 documentation

Documentation and video tutorials can be found on the Xact Web Portal documentation page.

Market-specific migration information

Germany – Mandatory asset servicing upgrade to OneClearstream asset servicing level (CAH – KADI DE migration to OneCAS)

Activation date: 3 July 2023

CBF accounts

CBL or
CBF-i accounts

Market coverage

Market Link Guide - Germany

Cutover announcements

D22016: "Corporate Actions Harmonisation - KADI DE migration to OneClearstream Asset Servicing (OneCAS)" - Update

D22071: Corporate Action Harmonisation – KADI DE Migration to OneCAS: Postponement of production launch to 3 July 2023 - Update

D23002: Corporate Action Harmonisation - Changes to EUR payment flows for subscription rights and manual cash bookings

D23013: Corporate Action Harmonisation - Changes in processing of warrants

D23023: Corporate action Harmonisation - Information on the production launch in July 2023

C22009: "Harmonisation of Clearstream Banking’s asset services" - Update

C22039: Harmonisation of Clearstream Banking’s asset services – German choice dividend event – New process - Update

C22041: Harmonisation of Clearstream Banking’s asset services – postponement of production launch to 3 July 2023 - Update

Simulation

Corporate Actions Harmonisation - KADI DE Migration to OneCAS - Client Simulation Registration Form

Corporate Actions Harmonisation - KADI DE Migration to OneCAS - Client Simulation Guideline

Detailed Functional Specifications

CAH KADI DE Migration to OneCAS - Detailed Functional Specifications

“Main Paying Agent / Lead Manager report” Preliminary example XLSX file

Migration

KADI DE Migration to OneCAS Corporate Action Harmonisation - Client Migration Guide

List of exceptionally not migrated ISINs

List of migrated events

Eurobonds – activation completed

Activation date Step 1: 22 March 2021

Activation date Step 2: 19 April 2021

CBF accounts

CBL or CBF-i accounts

Market coverage

Market Link Guide - International (CBF)

Cutover announcements

C20043: "Eurobonds eligibility in T2S  - Phase 2 - update" 

List of ISINs

List of eligible Eurobonds ISINs - Step 1

List of eligible Eurobonds ISINs - Step 2