VAST-2.0-companion-unknown-child
<Companion> contains an unrecognised child element
ErrorSchemaIAB VAST 2.0 §2.4.2VAST 2.0 and later (all versions)
`<Companion>` has a defined set of allowed children per the VAST schema.
How to fix
Remove the unrecognised element from <Companion>.
Check your VAST tag for
VAST-2.0-companion-unknown-child and other issues instantly.Validate a tag →Other Schema rules
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