> For the complete documentation index, see [llms.txt](https://www.mica.wtf/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.mica.wtf/mica.wtf/ai-act/chapter-iii-high-risk-ai-systems-art.-6-49/12.md).

# Art. 12 — Record-keeping

1. High-risk AI systems shall technically allow for the automatic recording of events (logs) over the lifetime of the system.
2. In order to ensure a level of traceability of the functioning of a high-risk [AI system](https://headlesslaw.com/definitions/ai-act/ai-system/) that is appropriate to the [intended purpose](https://headlesslaw.com/definitions/ai-act/intended-purpose/) of the system, logging capabilities shall enable the recording of events relevant for:
   1. identifying situations that may result in the high-risk AI system presenting a risk within the meaning of [Article 79(1)](/mica.wtf/ai-act/chapter-ix-post-market-monitoring-information-sharing-and-market-surveillance-art.-72-94/79.md) or in a [substantial modification](https://headlesslaw.com/definitions/ai-act/substantial-modification/);
   2. facilitating the post-market monitoring referred to in [Article 72](/mica.wtf/ai-act/chapter-ix-post-market-monitoring-information-sharing-and-market-surveillance-art.-72-94/72.md); and
   3. monitoring the operation of high-risk AI systems referred to in [Article 26(5)](/mica.wtf/ai-act/chapter-iii-high-risk-ai-systems-art.-6-49/26.md).
3. For high-risk AI systems referred to in point 1 (a), of Annex III, the logging capabilities shall provide, at a minimum:
   1. recording of the period of each use of the system (start date and time and end date and time of each use);
   2. the reference database against which [input data](https://headlesslaw.com/definitions/ai-act/input-data/) has been checked by the system;
   3. the input data for which the search has led to a match;
   4. the identification of the natural persons involved in the verification of the results, as referred to in [Article 14(5)](/mica.wtf/ai-act/chapter-iii-high-risk-ai-systems-art.-6-49/14.md).


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