Hi guys ,
i started my project with xcode 7 with swift 2.3 and already have uploaded 3 version for same on itunes, but now to add some new feature to app i moved is to xcode 8 and added imessageextention to it and that is working fine , now when im tring to upload app , I try to "Validate" on Organizer while preparation for an upload to iTunes Connect. After doing so i get "An error occurred.The operation couldn’t be completed. (ITunesSoftwareServiceAuthenticationErrorDomain error 434.)".