Tickets :: Comment on [#13022] Exceptions to events break ActiveSync synchronization

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Comment	> I have several Android devices where the Calendar stopped > synchronizing after a while (e-mail and tasks are still > synchronized). It turns out this probably has something to do with > exceptions to recurring events. After a recurring event is created > and an exception is created (by removing one of the recurrences), the > calendar on the device will no longer be synchronized. In the > horde.log, a message as follows is logged: > > 2014-03-07T16:03:58+01:00 ERR: horde [horde] SQL QUERY FAILED: > SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry > '{5319cacf-9574-43ab-9b49-57e2c0a8010a}129' for > INSERT INTO horde_activesync_state (sync_key, sync_data, sync_devid, > sync_mod, sync_folderid, sync_user, sync_pending, sync_timestamp) > VALUES ('{5319cacf-9574-43ab-9b49-57e2c0a8010a}129', > > 'C:34:"Horde_ActiveSync_Folder_Collection":88:{{"s":[],"f":"@Calendar@ > > ","c":"Calendar","lsd":1392989648,"sd":1394199248,"i":true,"v":1}}', > 'ANDROID1325376003337', 8864, '@Calendar@', 'test', 'a:0:{}', > 1394204638) [pid 25266 on line 200 of > "/usr/share/php5/PEAR/Horde/Db/Adapter/Pdo/Base.php"] > > Importing the attached .ics file into an empty calendar results in > similar behavior (the calendar is no longer synchronized and a > message about the duplicate entry is logged). After removing the > lines starting with 'EXDATE' from the .ics file and importing it will > successfully synchronize to the device however, so it looks like the > device doesn't like the exceptions. Strangely enough, if the > exception is created on the device, the change is propagated to Horde > without problems and the calendar on the device remains synchronized. > > The device I tested this with is running Android 4.2.2 with Google > Agenda (version 201308023).
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