VAST-2.0-unknown-attribute
Element has an attribute not defined in the VAST spec
WarningSchemaIAB VAST 2.0 §2VAST 2.0 and later (all versions)
An attribute was found on a VAST element that is not part of the spec for that element. This is usually a typo or a proprietary extension that should be inside an `<Extension>` block.
How to fix
Remove the unrecognised attribute, or move proprietary data inside an <Extension> block.
Check your VAST tag for
VAST-2.0-unknown-attribute and other issues instantly.Validate a tag →Other Schema rules
VAST-2.0-text-only-elementText-only element contains a child elementVAST-2.0-inline-unknown-child<InLine> contains an unrecognised child elementVAST-2.0-wrapper-unknown-child<Wrapper> contains an unrecognised child elementVAST-2.0-creatives-unknown-child<Creatives> may only contain <Creative> elementsVAST-2.0-creative-unknown-child<Creative> contains an unrecognised child elementVAST-2.0-linear-unknown-child<Linear> contains an unrecognised child elementVAST-2.0-trackingevents-unknown-child<TrackingEvents> may only contain <Tracking> elementsVAST-2.0-mediafiles-unknown-child<MediaFiles> contains an unrecognised child element