VAST-4.0-wrapper-clickthrough
<ClickThrough> inside Wrapper <VideoClicks> was removed in VAST 4.0 (re-allowed in 4.2)
WarningAmbiguousIAB VAST 4.0 §2.5 / VAST 4.2 §2.5VAST 4.0, 4.1, 4.2, and 4.3
VAST 4.0 removed `<ClickThrough>` from wrapper `<VideoClicks>` but VAST 4.2 re-introduced it. If you are targeting 4.0 or 4.1 players specifically, this element will be ignored.
How to fix
If targeting VAST 4.0 or 4.1 specifically, remove <ClickThrough> from wrapper <VideoClicks>; in VAST 4.2+ it is allowed again.
Check your VAST tag for
VAST-4.0-wrapper-clickthrough and other issues instantly.Validate a tag →Other Ambiguous rules
VAST-3.0-progress-offset<Tracking event="progress"> requires an offset attributeVAST-3.0-icon-attrsIcon missing recommended attributes (program/width/height/position)VAST-2.0-nonlinear-dimensions<NonLinear> missing width or heightVAST-2.0-companion-dimensions<Companion> missing width or heightVAST-4.2-icon-fallback-image-width-height<IconClickFallbackImage> should have width and height attributes