VAST-3.0-pricing-model-case
<Pricing> model value should be lowercase in VAST 3.0 (cpm/cpc/cpe/cpv)
WarningRequired fieldsIAB VAST 3.0 §2.3VAST 3.0, 4.0, 4.1, 4.2, and 4.3
The VAST 3.0 spec defines pricing model values as lowercase: `cpm`, `cpc`, `cpe`, `cpv`. Using `CPM` or mixed-case may cause some parsers to reject the value.
How to fix
Change the model value to all-lowercase: cpm, cpc, cpe, or cpv.
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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-2.0-root-has-ad-or-error<VAST> must contain at least one <Ad> or <Error>VAST-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>