ClearstreamXact: Corporate Actions ISO 15022/20022 client testing

Clearstream¹ informs clients that there will be an opportunity of message exchange between Clearstream and clients in ISO 15022/20022 format for Corporate Action events via Swift and Swift FIN+ channel.

To enable clients to test the flow with MT and MX messages and validate their setup and integration, Clearstream is offering the following testing window:

22 June – 3 July 2026

Registration for client testing

Clients can register by completing the attached PDF registration form and selecting the relevant connectivity setup.

Then, an email with the completed registration form must be sent to connect-test@clearstream.com with the following subject line:

[Name of Institution] – Corporate Action Subscription

Completed registration forms must be returned to Clearstream by end of day 17 June 2026.

Registration forms received after this date will be processed on a “best-efforts” basis only.

In this case, Clearstream cannot guarantee that all submitted data will be reflected in the test environment at the beginning of the testing period.

Please pay close attention to the details outlined in the form.

Clearstream encourages all impacted clients to participate in this testing period to ensure readiness and continuity of service.

Test ISINs, events and messages

a. As it is the same ISIN code for EXOF and DTCH, if clients plan to test both events, please do not instruct all holdings on one event.

Further information

For further information, please contact the Clearstream Connectivity Helpdesk or your Relationship Officer.

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1. Clearstream refers collectively to Clearstream Banking S.A., registered office at 42, avenue John F. Kennedy, L-1855 Luxembourg, and registered with the Luxembourg Trade and Companies Register under number B-9248, and Clearstream Europe AG, registered office at Mergenthalerallee 61, 65760 Eschborn, Germany and registered in Register B of the Amtsgericht Frankfurt am Main, Germany under number HRB 7500. Clearstream Banking S.A. is registered as an Australian CS (Overseas) Facility, under subsection 824B(2) of the Corporations Act 2001, with registration number ARBN 675 244 783.