Apps are not permitted to access the UDID and must not use the uniqueIdentifier method of UIDevice. Please update your apps and servers to associate users with the Vendor or Advertising identifiers introduced in iOS 6. If method names in your source code match the private Apple APIs listed above, altering your method names will help prevent this app from being flagged in future submissions. In addition, note that one or more of the above APIs may be located in a static library that was included with your app. If so, they must be removed.

If you think this message was sent in error and that you have only used Apple-published APIs in accordance with the guidelines, send the app's nine-digit Apple ID, along with detailed information about why you believe the above APIs were incorrectly flagged, to appreview@apple.com. For further information, visit the Technical Support Information page.

앱스토어에 업로드 할 때 오거나이저에서 validate를 시도했는데 위와같은 메시지가 나온다면

find . | grep -v .svn  | grep "\.a" | grep -v "\.app" | xargs grep uniqueIdentifier

터미널에서 위 명령어를 수행(해당 프로젝트 디렉터리)