{"page":"/tools/ads-txt-sellers-json-validator","modified":"2026-10-18","license":"https://creativecommons.org/licenses/by/4.0/","columns":["Field","Name","Rule"],"rows":[["1","Advertising system domain","\"The canonical domain name of the SSP, Exchange, Header Wrapper, etc system that bidders connect to\"; must match the system bidders receive requests from"],["2","Publisher account ID","\"The identifier associated with the seller or reseller account within the advertising system in field 1\"; must match the ID sent in transactions"],["3","Account type","DIRECT: \"the Publisher (content owner) directly controls the account\"; RESELLER: \"the Publisher has authorized another entity to control the account\"; case-insensitive"],["4","Certification authority ID (optional)","\"An ID that uniquely identifies the advertising system within a certification authority,\" for example a TAG ID; may be deprecated in favor of sellers.json identifiers"]],"sourceUrls":[[],[],[],[]]}