duplicate rows When insert into DB2 table

[dtv2002]

Hi,

I have a job, it write data from a dataset into a db2 tables (using UDB Enterprice stage)
When I execute the job, in Director, the status of my job is "FINISH" but when I look into detail of the log , Director display a "FATAL" error with message " Error Idx = 12 - duplicate rows for ..........."
the problem is : if I get a fatal then why Director give back a succesful status ???
is this bug of DS v 7.5, is there's any fixe for this prob.
(in 7.1x I don't have this kind of prob.)


Thank