Annex IV in Practice: A Practitioner’s Guide to Technical Documentation for High-Risk AI Systems
A comprehensive walkthrough of the fourteen elements required by Annex IV, cross-referenced against Articles 9 through 16 and the implementing acts. Includes worked examples across three Annex III use case categories — credit scoring, recruitment screening, and medical device AI — with annotated documentation templates and common pitfalls drawn from early-adopter implementations.
General-purpose AI models face a distinct obligation set that differs substantially from the high-risk system framework. This paper examines what constitutes a GPAI model, when systemic risk designations apply, and what technical and non-technical documentation providers must prepare and maintain.
Deployers of high-risk AI systems carry obligations that are often underestimated relative to providers. This report maps Article 26 requirements, the Article 27 FRIA process, and the practical steps deployers need to take before putting a system into use — including what to demand from their providers.
Classification is the first obligation and the most consequential — it determines everything that follows. This guide walks through Article 6, all eight Annex III categories, the prohibited practices under Article 5, and the edge cases where classification is genuinely ambiguous. Includes a worked decision tree.
Article 10 imposes data governance requirements that overlap substantially with GDPR Articles 5, 9, and 22. This analysis maps the interaction, identifies where the obligations conflict, and provides a practical framework for organisations managing datasets that contain personal data and special categories.
Article 72 monitoring plans must be embedded in the technical documentation before a system goes live, not bolted on after. This paper covers what a defensible monitoring plan contains, how to integrate it with existing model performance infrastructure, and what triggers a mandatory AISDP review.
Not all high-risk AI systems require third-party assessment. This report maps which Annex III categories require notified body involvement, what the assessment modules entail, how to select and engage a notified body, and what the Declaration of Conformity under Article 47 must contain in each case.
Article 4 requires providers and deployers to ensure their staff have sufficient AI literacy. This guide defines what sufficiency means in practice, how to structure a tiered literacy programme across different workforce roles, and how to evidence compliance to a supervisory authority without creating bureaucratic overhead.
The EU AI Act delegates enforcement to national competent authorities, but the supervisory architecture varies across member states. This analysis examines which authorities have been designated, how market surveillance is expected to operate, what triggers an investigation, and what organisations can do to reduce enforcement risk.
High-risk AI providers and deployers must register their systems in the EU AI database before placing them on the market. This paper covers the Annex VIII data requirements, who bears the registration obligation in provider/deployer arrangements, and the process for maintaining registration accuracy over the system's lifecycle.
When a provider supplies a high-risk AI system to a deployer, obligations do not transfer cleanly — they overlap. This report maps the Article 25 handover requirements, what providers must deliver, what deployers must verify, and how organisations acting as both provider and deployer for different systems should manage the resulting complexity.
Article 14 requires that high-risk AI systems can be effectively overseen by natural persons during operation. This guide examines what effective oversight means technically and operationally, how to document oversight measures in Annex IV, and how to avoid designing oversight mechanisms that exist only on paper.
Article 5 prohibitions have been in force since February 2025. This analysis examines each prohibition in turn — social scoring, subliminal manipulation, exploitation of vulnerabilities, biometric categorisation, real-time remote biometric identification — and addresses the boundary questions that practitioners are still working through in ambiguous deployments.
Financial services firms face concentrated exposure under Annex III, Section 5, which covers AI systems used in credit scoring, insurance underwriting, and access to essential services. This sector-specific report covers what falls in scope, the interaction with existing EBA and EIOPA AI guidance, and the practical documentation burden for institutions with large AI portfolios.
Annex III, Section 4 places recruitment, CV screening, promotion, and performance monitoring AI systems in the high-risk category. This guide walks HR and legal teams through the full Annex IV documentation obligation, FRIA requirements for employment contexts, and the human oversight design considerations specific to AI used in employment decisions.
Ready to get structured?
Early access is open for organisations with high-risk AI systems that need to be compliant by 2 August 2026. Provisioning takes under 60 seconds.