Xandr RTB error 1: Internal Error
What Xandr says
Xandr lists 1 as an internal error.
Xandr reports this integer in the ${AUCTION_LOSS} macro on the bid's lurl. A search for Xandr RTB error 1 is this code.
What was checked
Xandr rejected the bid before price comparison. OpenRTB groups 1 through 10 as a response the exchange could not use: a bad id, missing markup, a missing price, or a domain it will not accept.
What to change
Xandr does not publish a narrower cause for 1.
The same number in OpenRTB
OpenRTB loss reason 1 is Internal Error. Xandr publishes this integer with that meaning.