VAST-2.0-duplicate-impression

Q: How do I fix VAST-2.0-duplicate-impression?

Remove the duplicate ` ` URL, or change one to a different endpoint if both are intentional (e.g. two separate measurement partners).

Duplicate <Impression> URL within the same <Ad>

WarningConsistencyIAB VAST 2.0 §2.3.1VAST 2.0 and later (all versions)

Two or more `<Impression>` elements inside the same `<Ad>` carry identical URLs. The player will fire both, resulting in double-counted impressions and billing discrepancies.

How to fix

Remove the duplicate <Impression> URL, or change one to a different endpoint if both are intentional (e.g. two separate measurement partners).

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Other Consistency rules

VAST-2.0-parse-errorXML parse error — document may be malformed VAST-2.0-version-mismatchDeclared version does not match structural signals