security - Occassional Oauth exceptions - user hasn't authorized the app -


i sure application handling things works 88-92% of time, way getting following error: (oauthexception - #200) (#200) user hasn't authorized application perform action

i don't understand how possible. when user requested authorize app, not see way them accept subset of permissions required (it's or nothing). if proceed, , auth token, doesn't mean app has needed access? if not, how users doing that, , how can prevent or @ least detect it?

in terms of background, application kiosk application takes user's photo , allows them post (or, more precisely, link it) on facebook timeline. kiosk gets user's authorization, passes token , other data central web service communicates facebook. has been working 88-92% of time past week. despite no code changes or application configuration changes, prior past week had been working 93-96% of time couple weeks prior that, , 98% earlier that.

is there way can provide details (usernames , auth tokens) facebook more analysis? please help!


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