null pointer exception

System

Hi,
when i'm running the datadeploy script through command line , the following error is coming up:
*******************************************************
SQLException occured in TDbSchemaGroupCfg
Exception Message: ORA-01400: cannot insert NULL into ("INTERWOVEN"."PRESS_RELEA
SES"."SUBTITLE")

Vendor Error Code: 1400
SQL state: 23000
*******************************************************

*******STACK TRACE*************
java.sql.SQLException: ORA-01400: cannot insert NULL into ("INTERWOVEN"."PRESS_R
ELEASES"."SUBTITLE")

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though the subtitle column is set to accept null values....in the database table

SUBTITLE VARCHAR2(1000) NULL = Y

even my deploy script(the dodeploy.cfg) has the column subtitle -allows null ="yes" .

any suggestions as to why that error is coming up , would be helpful..

thanx