Purchase Rebate - Threshold Level

Hi All,

Purchase Rebate (G43a17) is based on Quantity and % level , example

Rebate Quantity   Rebate %

100                        11

200                         21

Purchase Order is raised for 80 Qty ( Amount is $400). Now when i run R43400, Debit and Credit entries are created for $44, Which means Rebate Amount to be collected from Vendor is $44.

Which is ideally wrong, because Rebate Quantity is set for 100 Quantity ( Rebate Amount should be calculated only when Purchase Order is created for more than 100 Quantities)

Kindly Clarify.

Thanks

Basith