Article 26(8) of the EU AI Act (Regulation (EU) 2024/1689) tells a public-authority deployer that when it establishes that the high-risk AI system it intends to use is not registered in the EU database, it does not use that system, and it notifies the provider or distributor. That’s a duty to refuse — triggered not by anything the deployer did wrong, but by someone else’s paperwork. It turns a database entry into a live precondition of go-live, and almost no procurement guidance treats it that way.
The rule and what it forces into your process
The answer first: a public authority or Union institution can’t lawfully put a high-risk system into service, or continue using one, once it has established the system isn’t registered. That has to become a checkpoint in the procurement and deployment process, not a compliance afterthought — a database lookup before go-live, and a clause in the contract that puts the burden of registration where the Act puts it.
What the public-authority deployer files itself
Registration in the EU database splits by who’s doing the filing. Providers file Annex VIII Sections A and B. But before putting an Annex III high-risk system into service or using it — with the same critical-infrastructure exception discussed below — deployers that are public authorities, institutions, bodies or agencies of the Union, or anyone acting on their behalf, have to do three distinct things: register themselves, select the system in the database, and register their use of it. That’s Annex VIII Section C, and it’s the deployer’s own filing, separate from anything the provider submitted, including a summary of the data protection impact assessment carried out under Article 35 GDPR where one was required.
When your registration disappears from public view
Not every entry is public. Annex III points 1, 6 and 7 — biometrics, law enforcement, and migration, asylum and border control management — go into a secured, non-public section of the database instead, and even there, only a specific, limited slice of the data makes it in: most of Annex VIII Section A (with three points excluded), five core points of Section B plus two more, the first three points of Section C, and four specified points of Annex IX. Access to that section is restricted to the Commission and the national authorities named for this purpose — and those authorities are typically the same ones that supervise data protection under the GDPR or the Law Enforcement Directive, not a separate, generic AI regulator. If you’re picturing a general market-surveillance body reading these files, picture your national data protection authority instead.
There’s a wrinkle worth knowing rather than glossing over: the same provision that names those data-protection authorities as the relevant overseers also covers Annex III point 8 — justice and democratic processes — but point 8 registrations themselves aren’t swept into the non-public section the way points 1, 6 and 7 are. Who regulates and where the entry lives aren’t drawn along quite the same lines, and it’s easy to conflate the two.
Real-world testing is invisible by default
A related blind spot: information submitted about testing high-risk systems under real-world conditions, outside a regulatory sandbox, is accessible only to market surveillance authorities and the Commission — not the public — unless the provider has specifically consented to make it public too. That default holds even for systems that would otherwise sit in the ordinary public section once fully registered; testing data gets the more cautious treatment until the provider opts in. And for providers of the same sensitive categories — points 1, 6 and 7 in their law-enforcement, migration, asylum and border-control uses — real-world testing registers straight into that same secure non-public section rather than the general restricted-testing one; for critical infrastructure, it registers nationally, matching how that category is treated everywhere else in the database.
Two gaps to plan around
Critical infrastructure — Annex III point 2 — never appears in the EU database at all. It registers at national level instead, and the Act doesn’t name a single EU-wide register to check; the mechanism is whatever the relevant Member State has set up, and that isn’t uniform. If your system touches critical infrastructure, “check the EU database” is the wrong instruction to give your team.
The second gap runs the other way. Article 26(8)’s mandatory check-and-refuse duty is written for public-authority and Union-institution deployers specifically. Other deployers may register voluntarily, and the recitals encourage it, but they aren’t bound by this particular provision the way a public authority is. Don’t assume a private-sector counterpart is running the same check you are — for them, absent other obligations, it’s optional.
How to operationalise the check
A workable version of this is short: identify which Annex III paragraph the system falls under, and therefore which part of the database it should appear in — public, non-public, or national. Look for the actual entry rather than accepting a supplier’s assurance that one exists. Record that the check was made and what it found, as part of the procurement file, not a side note. If the entry is missing, escalate before go-live rather than after. And notify the provider or distributor in writing, since Article 26(8) makes that notification part of the obligation, not a courtesy.
Frequently asked questions
What if the provider tells us registration isn’t required?
Verify it yourself rather than relying on that assurance. Article 26(8)’s duty sits with you as the deployer — if you use the system anyway on the strength of the provider’s claim and it turns out registration was required and missing, the exposure is yours, not theirs.
Does a framework agreement help?
Not on its own. A framework or procurement agreement doesn’t substitute for checking the specific system instance you’re actually deploying — registration status attaches to the system, not to the contract you’re buying it under.
Who’s the deployer when a contractor operates the system on our behalf?
You still are, in substance. Article 49(3)’s registration duty extends explicitly to persons acting on behalf of a public authority or Union institution, which is built precisely to stop the relationship from being restructured away through a contractor.
What if the system is in the non-public section?
If it’s your own registration as the deployer, you have access to it. If you’re trying to verify a third-party provider’s registration in that same section before deploying their system, that’s a harder practical problem — access is restricted to the Commission and the specific national data-protection authorities named for this purpose, not to public authorities generally. Build that verification into your contract with the provider directly, rather than assuming you can look it up yourself.
Does this apply to a system already in service?
The Act’s general grandfathering protects systems already on the market from new obligations absent a significant change, and that logic would plausibly extend here too — but I haven’t found a source addressing the registration-check duty for legacy systems specifically, so treat this as a reasonable inference rather than a settled answer, and confirm it against current guidance before relying on it.
