Europe’s ambition to build an integrated post-trade environment makes the migration to ISO 20022 far more than a technical upgrade. It represents a structural shift in how information flows across financial markets.

In December 2025, the Advisory Group on Market Infrastructures for Securities and Collateral (AMI-SeCo) published its recommendations for the transition to ISO 20022 communications in European securities post-trade services. The strategy aims to move the market away from fragmented data structures and legacy messaging formats towards structured, machine-readable information that supports automation and straight-through processing.

The objective is clear: reduce misinterpretation, ensure data consistency throughout the custody chain and improve the efficiency of cross-border asset servicing. Within this ecosystem, central securities depositories (CSDs) play a central operational role, as they distribute corporate events information to the entire custody chain. This makes them a key point in the transformation of post-trade data flows.

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On 4 July, from 10.00 to 11.30 CET, ECSDA held a webinar on ISO messages for financial transactions.

Together with the broad stakeholder community of industry associations in Europe and globally, as well as other Financial Market Infrastructures, CSD participants, and relevant market stakeholders and authorities, ECSDA would like to discuss the evolutionary path of the Securities Messaging standards.

The Programme of the webinar includes:

• Opening remarks by Anna Kulik, ECSDA Secretary General
• Presentation of the ECSDA considerations on ISO messages for financial transactions by Jean-Paul Lambotte, Chair of ECSDA Messaging Task Force, Director at Euroclear, Product Management, Digital Communication Interfaces – presentation slides
• Open discussion with participants