unique aria-label / title for landmarks (Invalid Link to KB)

[clapierre]

Please provide the following details if possible or relevant:

• [1.1.1] the version of Ace impacted by the issue (as returned by the ace -v command).
• [10.16.0] the version of Node used to run Ace (as returned by the node -v command).
• [Mac 10.14] your operating system and version.

Invalid link to KB

The landmark must have a unique aria-label, aria-labelledby, or title to make landmarks distinguishable
Learn more about: (no specific entry)

[danielweck]

Evidently, there is no KnowledgeBase entry for this type of reported issue.
Here are the currently-supported entries (do you see a good fit for "The landmark must have a unique aria-label, aria-labelledby, or title to make landmarks distinguishable"?):

ace/packages/ace-report-axe/src/index.js

Lines 19 to 75 in 5d4cc86

	const kbMap = {
	'baseUrl': 'http://kb.daisy.org/publishing/',
	'map': {
	'accesskeys': {url: 'docs/html/accesskeys.html', title: localize("kb.accesskeys")},
	'area-alt': {url: 'docs/html/maps.html', title: localize("kb.area-alt")},
	'aria-allowed-attr': {url: 'docs/script/aria.html', title: localize("kb.aria-allowed-attr")},
	'aria-hidden-body': {url: 'docs/script/aria.html', title: localize("kb.aria-hidden-body")},
	'aria-required-attr': {url: 'docs/script/aria.html', title: localize("kb.aria-required-attr")},
	'aria-required-children': {url: 'docs/script/aria.html', title: localize("kb.aria-required-children")},
	'aria-required-parent': {url: 'docs/script/aria.html', title: localize("kb.aria-required-parent")},
	'aria-roles': {url: 'docs/script/aria.html', title: localize("kb.aria-roles")},
	'aria-valid-attr-value': {url: 'docs/script/aria.html', title: localize("kb.aria-valid-attr-value")},
	'aria-valid-attr': {url: 'docs/script/aria.html', title: localize("kb.aria-valid-attr")},
	'button-name': {url: 'docs/html/forms.html', title: localize("kb.button-name")},
	'checkboxgroup': {url: 'docs/html/forms.html', title: localize("kb.checkboxgroup")},
	'color-contrast': {url: 'docs/css/color.html', title: localize("kb.color-contrast")},
	'definition-list': {url: 'docs/html/lists.html', title: localize("kb.definition-list")},
	'dlitem': {url: 'docs/html/lists.html', title: localize("kb.dlitem")},
	'document-title': {url: 'docs/html/title.html', title: localize("kb.document-title")},
	'duplicate-id': {url: 'docs/html/ids.html', title: localize("kb.duplicate-id")},
	'empty-heading': {url: 'docs/html/headings.html', title: localize("kb.empty-heading")},
	'epub-type-has-matching-role': {url: 'docs/html/roles.html', title: localize("kb.epub-type-has-matching-role")},
	'frame-title-unique': {url: 'docs/html/iframes.html', title: localize("kb.frame-title-unique")},
	'frame-title': {url: 'docs/html/iframes.html', title: localize("kb.frame-title")},
	'heading-order': {url: 'docs/html/headings.html', title: localize("kb.heading-order")},
	'href-no-hash': {url: 'docs/html/links.html', title: localize("kb.href-no-hash")},
	'html-has-lang': {url: 'docs/html/lang.html', title: localize("kb.html-has-lang")},
	'html-lang-valid': {url: 'docs/html/lang.html', title: localize("kb.html-lang-valid")},
	'image-alt': {url: 'docs/html/images.html', title: localize("kb.image-alt")},
	'image-redundant-alt': {url: 'docs/html/images.html', title: localize("kb.image-redundant-alt")},
	'input-image-alt': {url: 'docs/html/images.html', title: localize("kb.input-image-alt")},
	'label-title-only': {url: 'docs/html/forms.html', title: localize("kb.label-title-only")},
	'label': {url: 'docs/html/forms.html', title: localize("kb.label")},
	'layout-table': {url: 'docs/html/tables.html', title: localize("kb.layout-table")},
	'link-in-text-block': {url: 'docs/html/links.html', title: localize("kb.link-in-text-block")},
	'link-name': {url: 'docs/html/links.html', title: localize("kb.link-name")},
	'list': {url: 'docs/html/lists.html', title: localize("kb.list")},
	'listitem': {url: 'docs/html/lists.html', title: localize("kb.listitem")},
	'meta-refresh': {url: 'docs/html/meta.html', title: localize("kb.meta-refresh")},
	'meta-viewport-large': {url: 'docs/html/meta.html', title: localize("kb.meta-viewport-large")},
	'meta-viewport': {url: 'docs/html/meta.html', title: localize("kb.meta-viewport")},
	'object-alt': {url: 'docs/html/object.html', title: localize("kb.object-alt")},
	'p-as-heading': {url: 'docs/html/headings.html', title: localize("kb.p-as-heading")},
	'pagebreak-label': {url: 'docs/navigation/pagelist.html', title: localize("kb.pagebreak-label")},
	'radiogroup': {url: 'docs/html/forms.html', title: localize("kb.radiogroup")},
	'scope-attr-valid': {url: 'docs/html/tables.html', title: localize("kb.scope-attr-valid")},
	'server-side-image-map': {url: 'docs/html/maps.html', title: localize("kb.server-side-image-map")},
	'table-duplicate-name': {url: 'docs/html/tables.html', title: localize("kb.table-duplicate-name")},
	'table-fake-caption': {url: 'docs/html/tables.html', title: localize("kb.table-fake-caption")},
	'td-has-header': {url: 'docs/html/tables.html', title: localize("kb.td-has-header")},
	'td-headers-attr': {url: 'docs/html/tables.html', title: localize("kb.td-headers-attr")},
	'th-has-data-cells': {url: 'docs/html/tables.html', title: localize("kb.th-has-data-cells")},
	'valid-lang': {url: 'docs/html/lang.html', title: localize("kb.valid-lang")},
	'video-caption': {url: 'docs/html/video.html', title: localize("kb.video-caption")},
	'video-description': {url: 'docs/html/video.html', title: localize("kb.video-description")},
	}
	};

[danielweck]

Maybe docs/script/aria.html https://kb.daisy.org/publishing/docs/script/aria.html ?

[danielweck]

The message "The landmark must have a unique aria-label, aria-labelledby, or title to make landmarks distinguishable" comes from the landmark-is-unique check:

https://github.com/dequelabs/axe-core/blob/master/lib/checks/landmarks/landmark-is-unique.json

[danielweck]

I created a Pull Request (to be reviewed):
#279

[danielweck]

Charles, could you please share the EPUB so we can reproduce the exact Axe check/rule at our end? Thank you!

[clapierre]

@danielweck I will check with the publisher and send you the EPUB directly once they approve.
Thanks

[laudrain]

@danielweck yes it comes from the rules of uniqueness of landmarks, but as I stated in issue 271, I cannot find any exhaustive list of landmark roles !

[danielweck]

Fixed via #299