private static void changeValues(List<DstColumn> listColumns, List<DstType> listTypes) {
        for (DstColumn column : listColumns) {
            if (!column.system.equals("1")) {
                String DSTName = column.DSTName;
                String DSTColumnName = column.DSTColumnName;

                if (DSTName.equalsIgnoreCase("Account Activity") && DSTColumnName.equalsIgnoreCase("Transaction Reference")) {
                    //do nothing by VOY-2827
                } else {
                    for (DstType listType : listTypes) {
                        if (listType.name.equalsIgnoreCase(DSTName)) {
                            String columnNames = listType.identifying_dst_column_names;
                            StringTokenizer st = new StringTokenizer(columnNames, ",");
                            while (st.hasMoreTokens()) {
                                String s = st.nextToken();
                                if (s.equalsIgnoreCase(DSTColumnName)) {
                                    column.Mandatory = "1";
                                }
                            }
                        }
                    }
                }
            }
        }
    }