VAST-3.0-icon-resource
VAST-3.0-icon-resource
<Icon> must have at least one resource element
ErrorRequired fieldsIAB VAST 3.0 §2.4.5VAST 3.0, 4.0, 4.1, 4.2, and 4.3
Short answer
Like companions and nonlinear creatives, <Icon> elements must contain at least one renderable resource: <StaticResource>, <IFrameResource>, or <HTMLResource>.
Why this matters in production
This rule is usually a delivery blocker. Many players, SDKs, and ad servers will discard the response or skip the affected creative once this condition is hit. Required-field failures usually stop validation early because the platform cannot determine the basic shape of the ad, the creative metadata, or the mandatory tracking payload. Affected scope: VAST 3.0, 4.0, 4.1, 4.2, and 4.3.
How to fix
Add <StaticResource>, <IFrameResource>, or <HTMLResource> inside <Icon> to supply the renderable asset.
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VAST-3.0-icon-resource and other issues instantly.Open the VAST tag validator →Other Required fields rules
VAST-2.0-root-elementRoot element must be <VAST>VAST-2.0-root-version<VAST> must have a version attributeVAST-2.0-root-version-valueVAST version attribute must be a recognised version stringVAST-4.0-wrapper-root-error<VAST> root contains both <Ad> and <Error> elements (invalid per VAST 4.0)VAST-2.0-ad-has-inline-or-wrapperEach <Ad> must contain exactly one <InLine> or <Wrapper>VAST-2.0-inline-adsystem<InLine> must contain <AdSystem>VAST-2.0-inline-adtitle<InLine> must contain <AdTitle>VAST-2.0-inline-impression<InLine> must contain at least one <Impression>