Unity RTB error 1002: General marketplace rule block
What Unity Exchange says
A catch-all error for marketplace blocks that occur in Unity Exchange.
Unity Exchange reports this integer in the ${AUCTION_LOSS} macro on the bid's lurl. A search for Unity RTB error 1002 is this code.
What to change
Unity blocked the bid under a marketplace rule and did not use a narrower code. Check the publisher blocks Unity also reports as 1003 through 1010: age rating, region, platform, sensitive attributes, and category.