SA - GR posting price calculation in account document

Hi

I am arun ABAP Consultant.

Inbound delivery is created based on released SA.

In the Inbound delivery - the goods are posted.

inbound delivery quantity same as SA delivery quantity.

Now inbound delivery on post goods

the price is calculated on quantity scale

let us consider scale as

1-100 , 10rs

101-200 , 9rs

201-500 , 8rs

when i have quantity = 150 , the price is calculated as 150 * 10 , its taking the first line in the scale - irrespective of quantity for pricing calculation for the account number.

kindly guide me any EXITS/ BADI available for solving this issue.