VAST-2.0-companionads-unknown-child
<CompanionAds> may only contain <Companion> elements
ErrorSchemaIAB VAST 2.0 §2.4.2VAST 2.0 and later (all versions)
`<CompanionAds>` is a container for `<Companion>` elements only.
How to fix
Wrap the element inside a <Companion> element, or remove it from <CompanionAds>.
Check your VAST tag for
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