Home What Is What is VAST error 101

What is VAST error 101

What is VAST error 101

VAST error 101, aka VAST schema validation error, is an error that can be caused when the buyer’s response is missing required elements or attributes of the XML or contained unrecognized elements, according to the IAB standard. 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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