Update MVK0 , MVK1 and WOTB based on the updated VKP0

Hi all

Here we are creating POs through an application in retail known as OAPC( Opertaional Assortment planning & control). By creating PO through this we can have a limit set on the purchase order value known as OTB( open to Buy). This open to buy value is calculated on the sales price of the article.

OTB value= Qty* sales price

Here the requirement is to update condition types MVK0, MVK1 and WOTB in PO once I update my VKP0. Even if its a separe application, the pricing schema is same as MM & SD pricing.

Can anyone tell me how to update these prices in PO ?

Please help.

Thanks & Regards

Jajati