Equativ RTB error 209: Creative Filtered - Category Exclusions
What Equativ says
Equativ blocked the creative, or the advertiser category, as sensitive. The public table lists both checks under 209.
Equativ reports this integer in the ${AUCTION_LOSS} macro on the bid's lurl. A search for Equativ RTB error 209 is this code.
What to change
A sensitive category returns 209 even when the markup itself is fine. Move the advertiser off that category for this publisher.
The same number in OpenRTB
OpenRTB loss reason 209 is Creative Filtered - Category Exclusions. Equativ publishes a different reading of this integer. Use the wording above when the loss came from Equativ.