Database Software

After I define a TIME dimension and try to Maintain Dimension (Loading data at first time), it encounters error as below:
/************
An error has occurred on the server
Error class: Express Failure
Server error descriptions:
INI: Error creating a definition manager, Generic at TxsOqConnection::generic<BuildProcess>
INI: XOQ-01714: "TIME_TEST_HA.TIME_TEST_HA" failed validation as a non-ragged hierarchy, Generic at TxsOqStdFormCommand::execute

at oracle.olapi.data.source.DataProvider.callGeneric(Unknown Source)
at oracle.olapi.data.source.DataProvider.callGeneric(Unknown Source)
at oracle.olapi.data.source.DataProvider.executeBuild(Unknown Source)
at oracle.olap.awm.wizard.awbuild.UBuildWizardHelper$1.construct(Unknown Source)
at oracle.olap.awm.ui.SwingWorker$2.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
************/

Here is the data from related table TIME_TEST:

SELECT * FROM TIME_TEST;

YEAR QUARTER MONTH DAY
-----------------------------------------------------------
2008 4 11 5
2008 1 2 6
2008 4 10 7
2009 1 1 1
2009 1 1 5

Any help will be appreciate!


Thanks,
Satine