Map of the AI Act
Article 4a: legal basis for bias testing with special categories of personal data
The map shows what hangs off this object: who carries the duty, what it calls for, what it is evidenced by and what it rests on. Click an object and it becomes the new centre.
On a small screen the map reads as a path rather than as a network.
obligation
Article 4a: legal basis for bias testing with special categories of personal data
Article 4a grants permission rather than instruction, and to two different sets of parties. Paragraph 1 allows only the provider of a high-risk AI system to process special categories of personal data by way of exception, to the extent strictly necessary for bias detection and correction within the meaning of Article 10(2), points (f) and (g), and only where all six conditions (a) to (f) are met. Paragraph 2 opens the same room to providers and deployers of other AI systems and models and to deployers of high-risk systems, but only for bias likely to affect the health and safety of persons, to have a negative impact on fundamental rights or to lead to discrimination prohibited under Union law, and subject to the same six conditions. Until 27 July 2026 this basis sat in Article 10(5).
based on
- Inserted Article 4a on EUR-Lexguidance
carries the duty
calls for
evidenced by
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Read at 27 Jul 2026. What did not yet apply on that date is not shown here. The Digital Omnibus enters into force: the requirements for high-risk systems move back and article 4 takes its current wording.