Line 17 ambientdigitalgroup.com is not the canonical exchange domain. Use gammassp.com instead.
Line 26 Record cannot include more than 4 comma-separated fields (ad system domain, publisher account ID, relationship, optional - certification authority ID)
Line 140 Ad system domain vdopia.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