I'm seeing inconsistencies between Facebook' stated policy regarding the expiration time of Page access tokens, and the expiration time for tokens obtained through my application.
According to https://developers.facebook.com/roadmap/offline-access-removal/ regarding the new access token policies effective July 5th:
"When a user grants an app the manage_pages permission, the app is able to obtain page access tokens for pages that the user administers by querying the [User ID]/accounts Graph API endpoint. With the migration enabled, when using a short-lived user access token to query this endpoint, the page access tokens obtained are short-lived as well.
Exchange the short-lived user access token for a long-lived access token using the endpoint and steps explained earlier. By using a long-lived user access token, querying the [User ID]/accounts endpoint will now provide page access tokens that do not expire for pages that a user manages."
In my authentication flow, I retrieve a 2 month token along with the manage_pages permission (migration is enabled). I then use this token to request Page access tokens via the [User ID]/accounts endpoint. The Page access token I'm getting back are shown to expire in 2 months according to https://developers.facebook.com/tools/debug. Facebook's policy (above) seems to state that these tokens should never expire.
Can someone help explain what's going on?
It seems that the community agrees that this is a bug. View the Facebook bug page at: http://developers.facebook.com/bugs/461517520524921