VAST-2.0-trackingevents-unknown-child
<TrackingEvents> may only contain <Tracking> elements
ErrorSchemaIAB VAST 2.0 §2.4.1VAST 2.0 and later (all versions)
`<TrackingEvents>` is a container for `<Tracking>` elements only. A child element with any other name is a schema violation.
How to fix
Replace the non-<Tracking> element with a proper <Tracking event="…"> element, or remove it.
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