Writing Your Annex IV Technical Documentation: A Step-by-Step Guide for High-Risk AI
Annex IV documentation is the cornerstone of AI Act conformity. Many organizations underestimate its scope. Here's a practical guide to building documentation that will withstand regulatory scrutiny.
Why Technical Documentation Is Make-or-Break
Annex IV of the EU AI Act sets out detailed requirements for technical documentation that providers of high-risk AI systems must produce before market placement. This documentation is the primary evidence package demonstrating your system meets AI Act requirements. In a regulatory inspection, the quality of your Annex IV documentation determines whether you receive a warning or a fine.
The Eight Elements of Annex IV Documentation
1. General Description — Intended purpose, affected persons, architecture overview. 2. Detailed System Description — Data flow diagrams, hardware specifications, software dependencies, training/validation dataset documentation, model architecture, performance metrics by demographic group. 3. Risk Management Documentation — Article 9 risk identification process, risks identified and mitigated, residual risks, maintenance procedures. 4. Changes Log — All post-initial modifications with assessment of whether each constitutes a "substantial modification." 5. Conformity Assessment Results — Third-party assessment results where required. 6. EU Declaration of Conformity — Formal declaration referencing Annex III category and conformity assessment procedure used. 7. Post-Market Monitoring Plan — Performance metrics to monitor, thresholds for corrective action, incident reporting triggers. 8. Instructions for Use — Intended purpose, hardware/software requirements, limitations, human oversight requirements, incident reporting procedures.
Common Documentation Failures to Avoid
Vague intended purpose descriptions, missing bias and fairness data (performance must be reported across demographic groups), treating documentation as a one-time exercise rather than a living record, undocumented data provenance for training datasets, and missing human oversight specifications. All of these create compliance gaps that regulators will find.
Need help producing compliant Annex IV documentation? Browse our directory of AI compliance consultants who specialize in technical documentation.