VAST-2.0-companion-dimensions
<Companion> missing width or height
WarningAmbiguousIAB VAST 2.0 §2.4.2VAST 2.0 and later (all versions)
Companion slots are matched by size. A `<Companion>` without `width` and `height` cannot be matched to a slot and will usually be ignored.
How to fix
Add width and height attributes to <Companion> matching the slot dimensions, e.g. width="300" height="250".
Check your VAST tag for
VAST-2.0-companion-dimensions 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-4.0-wrapper-clickthrough<ClickThrough> inside Wrapper <VideoClicks> was removed in VAST 4.0 (re-allowed in 4.2)VAST-4.2-icon-fallback-image-width-height<IconClickFallbackImage> should have width and height attributes