WCAG Success Criteriawcag-2.2-A
WCAG 4.1.1: Parsing (Deprecated in WCAG 2.2)
WCAG 4.1.1 Parsing requires that web content be free of major HTML/XML errors—such as duplicate IDs—that could cause assistive technologies to misinterpret or fail to process the page. Although deprecated in WCAG 2.2, the underlying axe-core rules remain active and violations still indicate real accessibility risk.