Restoring gives an error in the restore.log

Version : 5.0.0
Build Number : 5000

As part of testing, the database was backed-up using the following batch file

cd c:\AdventNet\ME\ServiceDesk\bin
call sd_service.bat -p
call backupdata.bat
call sd_service.bat -t

Some changes were made to a request in Service desk.

I stopped the service using sd_service.bat -p then the database was restored. (restoreData.bat)

The restore appears to have worked as the recent changes were not there and there are no obvious problems. However there is a .....data_restore.log file that contains.

**************************************************
Restore Error Log Messages
Date : Thu Dec 22 14:29:58 NZDT 2005
**************************************************

Exception While inserting data.
Reason : null, message from server: "Duplicate entry '1-<div' for key 1"
InsertString : INSERT INTO wordmap(APPLICATIONID,WORD) VALUES ( '1' , '<div' )
-----------------------------------------------------------------------

Does anyone know what this means and how important it is?