Dummy Item purchase order and receiving

Dear All,

I've received one request from procurement team. That is they want to create purchase order with dummy item with mass quantity for better price and exchange rate.

According to sales planning, they want to do receiving specific item and quantity from the purchase order in a certain period of time.

For example,

Purchase Order : PO1

Date  :  01/01/2019

Item : Dummy Can

Qty : 100,000

Receiving,

PO1

Date : 01/02/2019

Item :  MB Can

Qty : 80

Item : BS Can

Qty: 20

Please advise if there is any solution to settle this.

Thanks,

July