dateModified records when an article or blog post was last substantively edited, separate from datePublished. This check found Article or BlogPosting schema without dateModified.
Why this matters
dateModified can help readers and systems understand whether content has been maintained. Missing dateModified is a clarity gap for time-sensitive content, not proof that an AI system will downrank or refuse to cite the page.
How to fix it
Add dateModified to Article or BlogPosting JSON-LD where article markup is appropriate, and update it only when the page content genuinely changes. Automating this through the CMS is usually safer than manual edits.
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