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The hidden limits of standard bank synchronization in a multi-company group

August 20, 2026 by
The hidden limits of standard bank synchronization in a multi-company group
Idealis Consulting, Martin Leroy

When a company grows and structures its subsidiaries in an ERP like Odoo, automatic bank synchronization seems to be a given. By default, Odoo offers a connection based on the European directive PSD2 (Open Banking). While this flow is suitable for small structures, it becomes a real headache as soon as the organization manages a multi-entity network.

It is precisely the observation made by the financial department of Finance & Invest.brussels,



Our finance department processes payments and bank statements from about thirty bank accounts belonging to nine legal entities and spread across several financial institutions. During our migration to Odoo, we opted for the standard bank synchronization solution offered by Odoo.

Grégory Heirwegh
Head of Accounting, Finance & Invest.Brussels


The tyranny of re-authentications 

If you manage 30 bank accounts spread across 9 entities, such as Finance & Invest.brussels, the PSD2 standard does not provide you with true automation. In fact, it results in several service interruptions each year and dozens of unnecessary requests to your executives asking them to pull out their card readers.

Multiply the mandatory authorization renewal (every 6 months, if the connection hasn’t been interrupted before) by the number of banks and companies, and your accounting team ends up spending part of its time handling technical maintenance rather than managing cash flow.

🚀 ZOOM SOLUTION

Why choose Isabel Connect ?

Unlike the standard PSD2 synchronization that requires reconnecting your bank access every 6 months for each bank, Isabel Connect only requires a single authentication per year and remains stable. The module allows you to automatically download your official CODA files directly into Odoo (ensuring 100% reliability on opening/closing balances) and to send your SEPA payment batches to Isabel 6 with a single click!

👉 Découvrez comment simplifier vos opérations bancaires avec Isabel Connect


The instability of connections in Open Banking

En Open Banking, Odoo dépend des API ouvertes des différentes institutions financières. Il suffit d'une mise à jour chez l'une des banques du groupe pour que la synchronisation d'un journal saute sans préavis. Comme le soulignait Grégory Heirwegh après quelques mois de pratique : 



"After several months of use, we found that this solution struggled to meet the needs of our organization. The regular renewals of banking authorizations, the necessary interventions from representatives, as well as connection issues made its use particularly burdensome in an environment managing a large number of accounts. We then decided to re-examine the possibility of implementing Isabel Connect in order to have a more robust solution."

Grégory Heirwegh
Head of Accounting, Finance & Invest.Brussels


Take back control of your bank flows

Supporting financial departments facing the native limitations of Odoo is an integral part of our daily work. In the face of the friction generated by managing multiple bank accesses, there are proven solutions to simplify, secure, and sustainably stabilize your financial infrastructure. 


💡 Note: Beyond 5 bank accounts, PSD2 synchronization shifts the workload to repetitive technical maintenance.


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