> For the complete documentation index, see [llms.txt](https://docs.blueseasx.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.blueseasx.com/server-bidding/server-integration/win-loss-billing-notifications.md).

# Win/loss/billing notifications

The nurl, lurl and burl may contain the required macros, please replete them with appropriate values.

| **Macro**                         | **Description**                                                                                                                                                                                                                                                                  |
| --------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| ${AUCTION\_BID\_ID}               | ID of the bid, from the BidResponse.bidid attribute.                                                                                                                                                                                                                             |
| ${AUCTION\_ID}                    | ID of the bid request, from the BidRequest.id attribute.                                                                                                                                                                                                                         |
| ${AUCTION\_LOSS}                  | Loss reason code, as found in [Table 5.25](https://www.iab.com/wp-content/uploads/2016/03/OpenRTB-API-Specification-Version-2-5-FINAL.pdf#%5B%7B%22num%22%3A171%2C%22gen%22%3A0%7D%2C%7B%22name%22%3A%22XYZ%22%7D%2C69%2C152%2C0%5D) of the OpenRTB 2.5 spec. Only sent on lurl. |
| ${AUCTION\_MINIMUM\_BID\_TO\_WIN} | Second highest bid price. This value is relevant only to the winner of the auction and can be ignored if it is passed in the lurl. Value passed is 0 when there is only one bid: the winning bid.                                                                                |
| ${AUCTION\_PRICE}                 | The auction winning / clearing price. Returned in both nurl and lurl, so every bidder (win or loss) sees the final paid price. Uses the same currency and units as the bid. Maximum of six decimals. Value passed is 0 when there is no winning bid.                             |