${AUCTION_DISCOUNT_PCT}

What it expands to

Seller discount as a percentage of the bid price.

Expands with the seller discount as a percentage of the bid price. Added in 2.6-202606 alongside the revised AUCTION_PRICE definition.

What to watch for

AUCTION_PRICE is now the post-discount price, so this macro is how you recover the pre-discount economics. Log both or your yield math silently changes when an exchange starts discounting.

Encoding

When a macro rides inside another URL as a query parameter, the expanded value must survive URL parsing: exchanges support suffixed forms like ${AUCTION_DISCOUNT_PCT:B64} (base64) where documented, and values containing reserved characters must be percent-encoded. An unencoded expansion is the most common reason a notice URL truncates at the first ampersand.

Related

• All substitution macros
• Where nurl, burl, and lurl fire in the delivery flow
• Loss reason codes
• ${AUCTION_ID}
• ${AUCTION_BID_ID}
• ${AUCTION_IMP_ID}
• ${AUCTION_SEAT_ID}
• ${AUCTION_AD_ID}