If the decision necessitates the correction of the electoral list, the community shall carry out the correction of the electoral list, stating the date of decision, immediately after the decision has become effective. If a person not previously registered in the electoral list is thus added, his name shall be noted at the end of the electoral list together with the next available current number, and in that position of the electoral list, where he would have had to be registered initially, reference shall be made to the current number of the new entry.