Google puts two different integers on a loss notice. ${AUCTION_LOSS} is the OpenRTB loss reason, plus 501. ${CREATIVE_STATUS_CODE} is a separate list of 235 statuses. Mixing them up makes a price loss look like a policy violation.
501 is the loss reason for a bid that lost in the mediation waterfall. The creative status codes below are not loss reasons. They arrive in the other macro.
1 means the creative won. 79 means the creative was outbid. 166 means the publisher did not enable deals for the exchange. 182 means the publisher blocklisted the deal id. 183 means the deal id was enabled for a different deal type. 195 means the bid lost to a private auction, preferred deal, or programmatic guaranteed deal. 196 means the publisher blocked the buyer. 198 means the publisher blocked open-auction bids on the request. 235 means the currency on the response was invalid.
The creative status index is the full 235. Loss reason 501 stays on its own page.







