PURPOSE: To reduce man-hour and to shorten time by reducing the number of times of the reinput due to overlapping errors by selecting and determining a rewriting order without changing the processing procedure of a conventional system at the time of a replotting disposition.

CONSTITUTION: This system is composed of a contract list preparation means 1 reading a substitute lot number and the previous lot number from a new and old lot number contrast file F1 storing rewriting records and preparing a contrast list 6, a replotting head lot number table preparation means 2 extracting the record which does not exist in the previous lot number by the replotting number from the contrast list 6, registering the record in a replotting head lot number table 7 and updating the contrast list 6, a rewring order determination means 3 determining a rewriting order from the contrast list 6 by defining the previous lot number of each record of the replotting head lot number table 7 as a starting point and registering the order in a rewriting order table 8, a supplementary rewriting order determination means 4 recognizing and classifying the records and the record groups for which any exceptional processings are required from the records left in the contrast list 6 and registering them in a supplementary rewriting table 9, and a rewriting order list output means 5 outputting each table contents to a rewriting order list L1.