Line 36 Ad system domain adtag.vidssp.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 89 Record must include at least 3 comma-separated fields (ad system domain, publisher account ID, relationship)
Line 142 Record cannot include more than 4 comma-separated fields (ad system domain, publisher account ID, relationship, optional - certification authority ID)