Thread: ePub validation fails "role" tag
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Old 07-07-2016, 12:40 PM   #2
eschwartz
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https://manual.calibre-ebook.com/faq...e-is-not-valid
So, nothing really. Specs are not very meaningful, and validators can help point out problem issues but often (generally?) don't and produce noise instead.

If you need help passing an EPUB through EpubCheck, ask in the EPUB subforum. It has nothing to do with calibre, and the calibre gurus are not the same people as the EpubCheck gurus.
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