Risk · R-099 · Governance & Accountability

Conformity assessment and registration failure

A high-risk system is placed on the market or put into use without the required conformity assessment, declaration, marking or registration.

Severity
High
Audience
Heads-of · Practitioner
Frameworks
Article 43 · Article 47 · Article 49
Responsible AI domain
Reviewed
2026-11-10

What it is

Before a high-risk system under the EU AI Act is placed on the market or put into service, its provider must complete a conformity assessment, draw up a declaration of conformity, affix the marking and register the system. Certain deployers must also register their use. These are formal steps with documentary outputs, and a substantial modification can require them to be repeated. The risk is that they are missed, usually because the system was not recognised as high-risk or the organisation did not realise it was the provider.

How it happens

  • The system was misclassified, so no one started the process.
  • An organisation that modified or rebranded a system did not see that it had become its provider.
  • The assessment was done once and not revisited after substantial change.
  • A deployer assumed that registration was the supplier's task alone.

Why it matters

Operating without these steps is a breach carrying significant penalties, and the system may have to be withdrawn. For Annex III systems the obligations apply from 2 December 2027, which leaves time to prepare and none to spare for systems already in use.

Warning signs

  • No list exists of systems the organisation provides or deploys that are high-risk.
  • No declaration of conformity is held for a high-risk system in use.
  • Supplier contracts do not state who is provider.
  • Substantial changes have been made with no review of conformity.

Who owns it

Compliance or legal owns the regulatory process. The system owner is accountable for supplying the evidence. Procurement obtains declarations from suppliers.

In practice

A lender builds its own creditworthiness model for use in two EU member states and treats it as an internal tool. It is a high-risk system and the lender is its provider. The same pattern generalises to any organisation that builds for its own use and does not see itself as a provider.

Mitigating controls

Primary controls

High-risk conformity assessment and registration Preventive
Completes assessment, declaration and registration before use. High-risk AI systems complete the required conformity assessment, declaration, marking and registration before they are placed on the market or used, and again after substantial modification.

Supporting controls

AI regulatory obligations register and horizon scanning Directive
Tracks when the duties apply. The AI obligations that apply to the organisation, and the dates from which they apply, are recorded, mapped to controls and owners, and updated as the law and guidance change.
AI risk tiering and classification Directive
Correct classification identifies which systems need it. Each system is assigned an internal risk tier and a regulatory class by documented criteria, the result is reviewed independently, and it is revisited whenever the system or its use changes.

Framework and clause references

FrameworkClauseTitle
EU AI ActArticle 43Conformity assessment Conformity assessment.
EU AI ActArticle 47EU declaration of conformity Declaration of conformity.
EU AI ActArticle 49Registration Registration.

Sources

EU AI Act: Regulation (EU) 2024/1689 European Union (EUR-Lex) · official text

Related terms

How to cite

Axiom Verity (2026). Conformity assessment and registration failure. Reference Library, R-099. https://axiom-verity.com/risks/conformity-assessment-and-registration-failure. Reviewed 2026-11-10.