VAST-2.0-inline-unknown-child
<InLine> contains an unrecognised child element
ErrorSchemaIAB VAST 2.0 §2.3VAST 2.0 and later (all versions)
`<InLine>` has a defined set of child elements. Any element not in that set is a schema error and will be ignored by spec-compliant players.
How to fix
Remove the unrecognised element from <InLine>, or wrap it in <Extensions><Extension type="custom">…</Extension></Extensions>.
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