edit landed cost on receipt material

[yami...@gmail.com]

Hello everyone!, 

Starting from the purchase order, receipt, and invoice flow, I'm using the landed cost feature. I enter the estimates in the purchase order, which are applied at receipt according to the quantity received, and finally,  distribute the landed cost invoice line to Material Receipt . My question: Has anyone implemented the feature to edit additional costs at receipt and assign an additional cost that doesn't depend on the quantity received?  

Thanks