Siebel - Unique Constraint Violation Error On Check In ,Check Out,Get

There are several reasons for Unique Constrain Violation error on check-in/check-out/get operations:
I]If you are using your own ODBC datasource to connect to the Oracle database,there are chances that hidden parameters are not set properly.
To solve this error please follow steps given below :-
1.Go to start->Run
2.Type regedit,press enter
3.Go to following path :-
[HKEY_CURRENT_USER\Software\ODBC\ODBC.INI\]
where is your ODBC Connection name
4.Set following keys if there is mismatch :-
PacketSize = 0
EnableScrollableCursors = 0
ColumnsAsChar = 1
ColumnSizeAsCharacter = 1
II]If you re-initialize local database without re-extracting you will get same error.You have to extract local database before reinitializing it.
III] If you use one db extract for multiple developers unique constraint will be violated. The Siebel check in/out process relies on unique row ids. If you are reusing the local database for multiple developers the row ids can not be unique.