Allocating Percentages for MRP
After you have set up all suppliers and schedules for each item, you must allocate order percentages among suppliers using Scheduled Order MRP % Maintenance (5.5.1.17). This step is required. Percentages must equal 100% for each item.
Schedule Update from MRP uses these percentages to allocate MRP planned orders for the item among suppliers. To phase in new percentages, enter the same ship-to site and item number with different effective dates.