Line 110 Ad system domain featureforward.com is not a known exchange domain. Ensure the spelling is correct, check the partner documentation, or have the partner update the IAB Tech Lab normalization mappings: https://wiki.iabtechlab.com/index.php?title=Ads.txt_Normalization_Mappings
Line 311 altitudedigital.com is not the canonical exchange domain. Use altitude-arena.com instead.
Line 312 Ad system domain oath.com is not a known exchange domain. Ensure the spelling is correct, check the partner documentation, or have the partner update the IAB Tech Lab normalization mappings: https://wiki.iabtechlab.com/index.php?title=Ads.txt_Normalization_Mappings
Line 313 brightroll.com is not the canonical exchange domain. Use btrll.com instead.
Line 317 rubicon.com is not the canonical exchange domain. Use rubiconproject.com instead.
Line 321 sfx.freewheel.tv is not the canonical exchange domain. Use freewheel.tv instead.
Line 323 publishers.teads.tv is not the canonical exchange domain. Use teads.tv instead.
Line 324 publishers.teads.tv is not the canonical exchange domain. Use teads.tv instead.