VAST-2.0-ctv-interactive-payload
InteractiveCreativeFile extension requires one URL/data URI or non-empty CDATA HTMLResource
Short answer
Supply one HTTPS URL, one complete HTML data URI, or one non-empty CDATA HTMLResource. An optional AdParameters child is accepted. A mixed or empty executable payload is invalid.
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. These rules validate supplied standardized payloads carried in legacy VAST extensions. Correct version and location handling preserves compatibility while checking ID registries, mezzanine assets, SIMID payloads and creative bindings. Optional addendum features remain optional. Affected scope: VAST 2.0 and later (all versions).
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