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Certain ARIA roles must be contained by particular parent elements

Certain ARIA roles must be contained by particular parent roles in order to perform the intended accessibility functions.

For each role, WAI-ARIA explicitly defines which child and parent roles are allowable and/or required. Elements containing ARIA role values missing required parent element role values will not enable assistive technology to function as intended by the developer.

When it is necessary to convey context to the user of assistive technology in the form of hierarchy (for example, the importance of a parent container, item or sibling in a folder tree), and the hierarchy is not the same as the code structure or DOM tree, there is no way to provide the relationship information without the use of ARIA role parent elements.

Learn more about this accessibility rule at Deque University >>

Other WCAG: 1.3.1 accessibility rules checked by Rocket Validator