Sales plan evaluation support system

An evaluation support method for a sales plan evaluation support system, comprising:

• a step which obtains master information that includes a sales plan of a product and is used as input for material requirements planning (MRP) calculation;
• a first MRP calculating step which obtains a first order-placement plan through MRP calculation using the master information as input, the first order-placement plan including an ordered-item count and an order-placement date of a required item for the product;
• a revision timing setting step which sets timing for revising the sales plan;
• a master modifying step which modifies the master information;
• and
• a second MRP calculating step which obtains a second order-placement plan through MRP calculation by using an order-placement plan having an order-placement date preceding the revision timing included in the first order-placement plan as an order-placement plan which has been implemented prior to the revision timing, and by using, as input, master information modified by the master modifying step, the second order-placement plan including an ordered-item count and an order-placement date of a required item for the product;
• wherein the evaluation support method is implemented at least in part, by a hardware processor and memory.

A program which causes a computer to function as a sales plan evaluation support system, the program causing the computer to function as:

• means which obtains master information that includes a sales plan of a product and is used as input for material requirements planning (MRP) calculation;
• a first MRP calculating means which obtains a first order-placement plan through MRP calculation using the master information as input, the first order-placement plan including an ordered-item count and an order-placement date of a required item for the product;
• revision timing setting means which sets timing for revising the sales plan;
• master modifying means which modifies the master information;
• and
• a second MRP calculating means which obtains a second order-placement plan through MRP calculation by using an order-placement plan having an order-placement date preceding the revision timing included in the first order-placement plan as an order-placement plan which has been implemented prior to the revision timing, and by using, as input, master information modified by the master modifying means, the second order-placement plan including an ordered-item count and an order-placement date of a required item for the product.