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VAST-4.4-nonlinear-simid-iframe

VAST-4.4-nonlinear-simid-iframe

<IFrameResource apiFramework="SIMID"> is superseded by <InteractiveCreativeFile> in NonLinear

InfoCTV Ad PortfolioIAB CTV Ad Portfolio §Secure Interactive Ad UnitsAll VAST versions

Short answer

The CTV Ad Portfolio guidance states that <InteractiveCreativeFile apiFramework="SIMID"> inside the NonLinear <MediaFiles> container is "the preferred VAST 4.4 pattern for secure interactive NonLinear creative", and that the older <IFrameResource apiFramework="SIMID"> form "is not recommended for CTV Ad Portfolio NonLinear ads". The old pattern still works; it just conflates the interactive layer with the renderable asset, which is the distinction the new container exists to draw.

Why this matters in production

This rule is advisory rather than fatal, but it still matters for portability, debugging speed, and keeping tags predictable across different buyers and playback stacks. The CTV Ad Portfolio standardises Pause, Screensaver, Overlay, Squeezeback and In-Scene ads, which ran for years on bespoke per-publisher integrations. These rules cover the VAST side of that contract: the NonLinear MediaFiles delivery model, the AdCOM signals round-tripped into Extensions so stitchers can validate the experience without the bid object, and the QR code block. The signaling guidance is final; the VAST 4.4 schema that accompanies it is still a working-group draft, so anything sourced only from the schema is reported as a warning or a note. Affected scope: All VAST versions.

Invalid

<NonLinear width="480" height="70">
  <IFrameResource apiFramework="SIMID" type="text/html">
    <![CDATA[https://cdn.example.com/simid.html]]>
  </IFrameResource>
</NonLinear>

Valid

<NonLinear width="480" height="70">
  <MediaFiles>
    <InteractiveCreativeFile type="text/html" apiFramework="SIMID">
      <![CDATA[https://cdn.example.com/simid.html]]>
    </InteractiveCreativeFile>
  </MediaFiles>
</NonLinear>
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Other CTV Ad Portfolio rules

VAST-4.4-version-attributeDocument declares VAST 4.4, a working-group draft rather than a published specVAST-4.4-nonlinear-no-renderable-asset<NonLinear> has a SIMID interactive file but no renderable fallback assetVAST-4.4-nonlinear-mediafiles-empty<NonLinear> <MediaFiles> contains no renderable or interactive assetVAST-4.4-nonlinear-video-no-duration<NonLinear> delivers video but has no <Duration>: quartile tracking cannot fireVAST-4.4-adcom-extension-unknown-signal<Extension ext="adcom"> type is not plcmt, pos, playbackmethod or attrVAST-4.4-adcom-extension-type-mismatch<Extension> type attribute and AdCOM payload element name disagreeVAST-4.4-adcom-signal-not-integerAdCOM signal payload in <Extension> is not an integerVAST-4.4-adcom-plcmt-valueAdCOM plcmt outside the Plcmt Subtypes (Video) range 1–9