VAST-2.0-linear-unknown-child
<Linear> contains an unrecognised child element
ErrorSchemaIAB VAST 2.0 §2.4.1VAST 2.0 and later (all versions)
`<Linear>` has a defined set of allowed children per the VAST schema.
How to fix
Remove the unrecognised element from <Linear> — check the spec for the full list of allowed children.
Check your VAST tag for
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