The widespread adoption of SEPA payments has necessitated the adoption of the ISO 20022 standard for electronic exchanges between businesses and banks. This guide, written by Utsit, aims to explain, contextualize, and facilitate the implementation of this standard. It focuses on:

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• The structure of ISO 20022 messages (based on XML).
• The end-to-end operation of payment processes.
• Standardization and its practical applications in business.
• The rules, tools and best practices to adopt for successful implementation.
• An educational approach, illustrated with concrete scenarios (transfers, direct debits, statuses, corrections, etc.).

This document follows on from the previous SWIFT (2011) and SEPA (2012) Vade Mecums, with an approach rooted in field experience and interbank collaboration.