regarding import

I was trying to import some entries through ldapmodify operation.but i got this error....

Error adding object 'dn: cn=COMPETITIVE SHOP+uid=CSUSER, ou=ST_NO, o=xxxxx, c=US'. The error sent by the server was Constraint violation. Another entry with the same attribute value already exists'.

The thing is that the instance already had this OU and so i deleted the OU and then again tried to import the LDIF file ..then i got this error//?what exactly is the solution for this?

[497 byte] By [anandkaturia] at [2007-11-26 22:58:34]