[1] Standard Error Responses | DoubleClick Search API | Google Developers (2015-05-29 04:14:13 +09:00 版) <https://developers.google.com/doubleclick-search/v2/standard-error-responses>
corsRequestWithXOrigin The CORS request contains an XD3 X-Origin header, which is indicative of a bad CORS request.
[2]
Server: GSE Vary: Origin,X-Origin