When the Digital Euro Account Number Isn't an IBAN
The digital euro's DEAN looks like an IBAN but isn't. Rui Duarte Silva breaks down why, in a new article for IT-Finanzmagazin.
The digital euro's account number looks like an IBAN. It isn't one — and treating it like one is where integration projects will get caught out.
In a new piece for IT-Finanzmagazin, Rui Duarte Silva walks through why the Digital Euro Account Number (DEAN) breaks a core assumption banking systems rely on: that an account number tells you which institution holds the account. The DEAN doesn't. It's generated centrally by the Digital Euro Service Platform, and the link to a specific payment service provider is a separate, resolvable-only-via-lookup mapping — one that can change without the DEAN itself changing.
Rui traces what that means in practice: how the PSP mapping is resolved, why individual and business users hit very different account limits, how blocking and switching follow different reversal rules, and why one retention parameter in the ECB's rulebook is still an open variable rather than a fixed value — a detail with real implications for archive design.
For teams starting to scope core banking integration for the digital euro, it's a useful map of where the actual complexity sits.