Google creative status code 221: Native ad filtered because the VAST XML document is empty.

Google creative statusReturned in ${CREATIVE_STATUS_CODE}

What Google creative status says

Native ad filtered because the VAST XML document is empty.

Google returns this number in ${CREATIVE_STATUS_CODE} on the loss notice. It is not an ${AUCTION_LOSS} value. A search for Google creative status code 221 is this status.

What was checked

Google compared the creative on the bid with the constraint named in this status.

What to change

Status 221 names the constraint. It clears when that condition is gone. Bidding the same creative again returns 221.

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