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What is VAST error 100

What is VAST error 100

VAST error 100, aka VAST XML parsing error, is an error that can be caused when the buyer’s response is either malformed or an otherwise invalid XML document, or a redirect VAST URL that fails to resolve successfully. To fix the error, the publisher should alert the buyer and the buyer should verify that the VAST XML is correctly formatted and contains all of the required elements and attributes.


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