* INFO  2013-12-18 04:05:07,158 [data element id scheme: UID, org unit id scheme: UID, dry run: false, async: false, strategy: NEW_AND_UPDATES, skip check: false] (ImportDataValueAction.java [http-bio-8080-exec-4])
* INFO  2013-12-18 04:05:07,237 [Level: INFO, category: DATAVALUE_IMPORT, time: Wed Dec 18 04:05:07 PST 2013, message: Process started] (InMemoryNotifier.java [taskScheduler-1])
* INFO  2013-12-18 04:05:08,493 [Level: INFO, category: DATAVALUE_IMPORT, time: Wed Dec 18 04:05:08 PST 2013, message: Importing data values] (InMemoryNotifier.java [taskScheduler-1])
* INFO  2013-12-18 04:05:08,493 importing data values (DefaultDataValueSetService.java [taskScheduler-1])
* ERROR 2013-12-18 04:05:08,596 java.lang.RuntimeException: Failed to flush BatchHandler
	at org.amplecode.quick.batchhandler.AbstractBatchHandler.flush(AbstractBatchHandler.java:311)
	at org.hisp.dhis.dxf2.datavalueset.DefaultDataValueSetService.saveDataValueSet(DefaultDataValueSetService.java:447)
	at org.hisp.dhis.dxf2.datavalueset.DefaultDataValueSetService.saveDataValueSet(DefaultDataValueSetService.java:205)
	at org.hisp.dhis.importexport.action.util.ImportDataValueTask.run(ImportDataValueTask.java:86)
	at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:53)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:724)
Caused by: org.postgresql.util.PSQLException: ERROR: duplicate key value violates unique constraint "datavalue_pkey"
  Detail: Key (dataelementid, periodid, sourceid, categoryoptioncomboid)=(19243, 28829, 4788, 15) already exists.
	at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2103)
	at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1836)
	at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:257)
	at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:512)
	at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:374)
	at org.postgresql.jdbc2.AbstractJdbc2Statement.executeUpdate(AbstractJdbc2Statement.java:302)
	at org.amplecode.quick.batchhandler.AbstractBatchHandler.flush(AbstractBatchHandler.java:295)
	... 12 more
 (DefaultDataValueSetService.java [taskScheduler-1])
* INFO  2013-12-18 04:05:08,596 [Level: ERROR, category: DATAVALUE_IMPORT, time: Wed Dec 18 04:05:08 PST 2013, message: Process failed: Failed to flush BatchHandler] (InMemoryNotifier.java [taskScheduler-1])