Google Authorized Buyers loss reason codes
Google Authorized Buyers sends loss reason 501 when a bid loses in the mediation waterfall. Creative status codes travel in ${CREATIVE_STATUS_CODE}, which is a different field from ${AUCTION_LOSS}. The numbered list is the [Google creative status index](/docs/openrtb/loss/exchange/google-creative-status/).
Published codes
| Value | Name | Meaning |
|---|---|---|
501 | Lost in the mediation waterfall | Google sends 501 in ${AUCTION_LOSS} when the bid lost in the mediation waterfall. Google says it supports most OpenRTB loss reason codes, and 501 is the extra value. |
Published in the Google Authorized Buyers win and loss notifications. The OpenRTB list these sit beside is the loss reason code table.