Loss reason 214: Creative Filtered - Invalid SKAdNetwork

What it means

The SKAdNetwork signature or fields failed validation.

The exchange reports this code by expanding the ${AUCTION_LOSS} macro in the bid's loss notice URL (lurl). A bidder that does not set lurl never sees it, and never learns why it lost.

What to do about it

The 200-series means the exchange's creative policy rejected the ad after the auction logic: size, format, security, category, attribute, or store exclusions, or a creative still pending review. Compare what your adm actually contains against what the imp offered (the validator's markup-vs-mtype and markup-vs-imp checks catch format mismatches), and pre-sync creative approvals with exchanges that require review.

Related

• The full loss reason table
• ${AUCTION_MIN_TO_WIN}: the price-discovery companion macro
• Loss reason 212: Creative Filtered - Animation Too Long
• Loss reason 213: Creative Filtered - Not Allowed in Deal
• Loss reason 215: Creative Filtered - App Bundle Exclusions
• Loss reason 500+: Exchange-specific