Unity RTB error 1008: Sensitive attribute block
What Unity Exchange says
Publisher block on demand containing sensitive attributes (for example: real money gambling).
Unity Exchange reports this integer in the ${AUCTION_LOSS} macro on the bid's lurl. A search for Unity RTB error 1008 is this code.
What to change
The publisher blocked a sensitive attribute on the demand, for example real-money gambling. Remove that attribute from the bid.