To override the Content-type in your clients, use the HTTP Accept Header, append the .csv suffix or ?format=csv
The following are sample HTTP requests and responses. The placeholders shown need to be replaced with actual values.
POST /csv/reply/PostOAuth2TokenInfoRequest HTTP/1.1
Host: prodeastbbauthservice.transactcampus.com
Content-Type: text/csv
Content-Length: length
{"AccessToken":"String","ClientId":"String"}
HTTP/1.1 200 OK
Content-Type: text/csv
Content-Length: length
{"ErrorCode":0,"ErrorDescription":"String"}