RouterStrList.Text := 'Main Router ¨ 318C-954F-FF6F-B295 ¨ 78.46.163.220 ¨ 443 ¨ 1' + #13#10
                      'Test Router ¨ 1A6F-AFEF-48EF-AEED ¨ 192.168.2.54 ¨ 443 ¨ 2';
 Try
 
   if (tbRouters.Active = False) then tbRouters.Active := True else tbRouters.Refresh;
   tbRouters.BeginCachedUpdates;
   tbRouters.First;
   while not tbRouters.Eof do Table.Delete;
   for I := 0 to RouterStrList.Count - 1 do begin
     TempStr := RouterStrList.Strings[I];
     tbRouters.Append;
     tbRouters.FieldByName('RouterName'  ).AsString := Copy(TempStr,      1, X1      - 1);
     tbRouters.FieldByName('SecurityCode').AsString := Copy(TempStr, X1 + 3, X2 - X1 - 3);
     tbRouters.FieldByName('RouterIP'    ).AsString := Copy(TempStr, X2 + 3, X3 - X2 - 3);
     tbRouters.FieldByName('RouterPort'  ).AsString := Copy(TempStr, X3 + 3, X4 - X3 - 3);
     tbRouters.FieldByName('Index'       ).AsString := Copy(TempStr, X4 + 3, 10);
     tbRouters.Post;
   end;
   tbRouters.ApplyCachedUpdates;
 Except
   On E : Exception do begin
   Application.MessageBox(PChar(E.Message), '');
   if tbRouters.CachingUpdates then tbRouters.CancelCachedUpdates;
   end;
 End;

Error Message
-------------------------------------------
 ElevateDB Error #1305 Error loading the updates for the database ClientDB
(Unknown error occurred with the table Routers (ElevateDB Error #1004 The unique constraint
"idxSecurityCode" for the table Routers has been violated (Duplicate key 1A6F-AFEF-48EF-AEED found)))