System for rearranging purchase orders and its method

Abstract

The reschedule step includes following steps: (1) receiving new material need information, based on type of material, feasible period is determined; (2) determining need quantity and the supply quantity in these periods; (3) calculating rolling out or rolling in quantity in each period as well as transporting in or out quantity of materials; (4) rescheduling date to the first day of pointed period; (5) calculating out delivery date, new purchase orders are rearranged by using supply quantity as purchasing quantity in purchase order. When material required is changed, the invention rearranges purchase orders created so as to make quantity of material purchased more reasonable.

Description

【Field of Invention】 [0001] The present invention relates to a purchase order rearrangement system and method, in particular to a purchase order rearrangement system capable of rescheduling the original purchase order when the material demand changes during material demand planning and methods. [Background of the invention] [0002] In the manufacturing industry, most manufacturing enterprises use the Material Requirement Planning (MRP) system to manage the production process of the enterprise. In the ever-changing modern transaction mode, due to changes in customer order demand or other factors, the material requirements of manufacturing enterprises change, which leads to the need for manufacturing enterprises to rearrange the generated purchase orders from time to time. However, the existing SAPStandard MRP system cannot effectively deal with the rearrangement of purchase orders caused by changes in material requirements. For example, SAP Standard MRP cannot split the or...

AI Technical Summary

Problems solved by technology

However, the existing SAPStandard MRP system cannot effectively deal with the rearrangement of purchase orders caused by changes in material requirements

For example, SAP Standard MRP cannot split the original purchase order, but treat it as a whole purchase order, which leads to the following problems: (1) If the existing material demand is less than the expected demand, Purchasing according to the original purchase order will inevitably lead to the supply quantity of the material being greater than the demand quantity of the material, resulting in an increase in inventory and increasing inventory pressure. Therefore, a part of the purchase quantity of the original purchase order should be reduced to make the material supply equal to the material demand, but SAP Standard MRP does not handle similar situations, resulting in unnecessary inventory

(2) If the material demand changes, SAP Standard MRP will use the original purchase order as a whole unit to reschedule (reschedule), which causes a large increase in inventory and makes the company take unnecessary risks. For a purchase order with a date of 2002 / 08 / 01 and a quantity of 10,000 units, the material demand is changed to 2002 / 07 / 01 as 1,000 units and 2002 / 12 / 01 as 9,000 units. Quantity 10,000 units was rescheduled to 2002 / 07 / 01, which resulted in an excess inventory of 9,000 units during the period from 2002 / 07 / 02 to 2002 / 12 / 01

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