Tpump external loader + informatica

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Tpump external loader + informatica

Hi,

I am trying to extract data from multiple tables,joining in the source qualifier, and inserting into the target table.Using Tpump external loader.I get the following error after the source rows are read....
"error outputing the row to output file"
the session logs shows broken pipe error....
Tried is staged option and looked at the row mentioned in the loader log but cannot find anything wrong with that row.
could the problem be with uniqueness?The target table has row_wid as primary key.
Any help is appreciated.
Thanks in advance.