Looking for clarity on Layout tables

Hello everyone,
I have two questions about the Layout tables.
Do we MUST use the WAI-Aria role=presentation on a Layout Table?
Is the WAI-Aria mandatory or only advisory, best practice or else?

I am looking for a concrete direction, a reference in WCAG, W3C, that says clearly that layout tables must use role=presentation.
I found many references but none says role=presentation is required.

References:
2.9 Use of Role=presentation or Role=none<https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/ARIA_Techniques/Using_the_presentation_role>
Digital A11y WAI-ARIA: Role=Presentation<https://www.digitala11y.com/presentation-role/>
Working Group Decision on ISSUE-130: table-layout<https://lists.w3.org/Archives/Public/public-html/2011Mar/0245.html>
Layout table with role=presentation: Screen reader compatibility<https://www.powermapper.com/tests/screen-readers/tables/table-role-presentation-layout-table/>
2017 Presentation Role Examples<https://www.w3.org/TR/2017/WD-wai-aria-practices-1.1-20170628/examples/presentation/PresentationRoleExamples.html>
WAI-ARIA: Role=Presentation<https://www.digitala11y.com/presentation-role/>

WCAG has clear fails:
F92: Failure of Success Criterion 1.3.1 due to the use of role presentation on content which conveys semantic information<https://www.w3.org/TR/WCAG20-TECHS/F92.html#F92-tests>

Thank you,
Martyna Marjanska

Received on Saturday, 20 February 2021 00:58:17 UTC