ABC News not oneboxing due to missing description

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Hmmm ok. I think I might have figured it out… it is a missing “description” field, perhaps?

Here are 3 links from big sites and the related iframely reports.

:arrow_forward: ABC News iframely report

:arrow_forward: CNN iframely report

:arrow_forward: NBC News iframely report

The only difference I can see between the ABC News example, above, and this NBC News link is that NBC includes more image sizes, icons, and a date and description. Could any of those be “showstoppers” that prevent onebox from kicking in?

Hmm and CNN is also missing a description, but does have an icon and date. So maybe description is a required field… ?