Unity RTB error 1010: IAB category block
What Unity Exchange says
Publisher block on specified IAB category.
Unity Exchange reports this integer in the ${AUCTION_LOSS} macro on the bid's lurl. A search for Unity RTB error 1010 is this code.
What was checked
Unity checked the bid's IAB category against the publisher's category block.
What to change
The publisher blocked this IAB category. It is the same class of block as OpenRTB loss reason 209, reported with Unity's integer.