Article 4 imposes the substantive accessibility obligation: Member States shall ensure that public sector bodies take the necessary measures to make their websites and mobile applications more accessible by making them perceivable + operable + understandable + robust (the POUR principles). The POUR principles are operationalised through compliance with the W3C WCAG 2.x Conformance Level AA (currently WCAG 2.1 + transitioning to WCAG 2.2 as EN 301 549 v4.x is finalised). PERCEIVABLE - information + UI components must be presentable in ways users can perceive (text alternatives + captions + adaptable + distinguishable). OPERABLE - UI + navigation must be operable (keyboard accessible + enough time + seizures + navigable + input modalities). UNDERSTANDABLE - information + UI operation must be understandable (readable + predictable + input assistance). ROBUST - content must be robust enough to be interpreted reliably by a wide variety of user agents including assistive technologies (compatible). Compliance is presumed under Article 6 where the website / mobile app complies with the harmonised standard EN 301 549.
This control maps to 8 controls across 1 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.
Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.
The graph holds this control, the 8 it maps to, and the evidence behind each claim, over MCP and REST.