Grading of vegetable

Hi All,

I have a scenario in my business, We buy vegetables like cabbage n during transportation upper leaf get damage n we have to remove them b4 selling. It means i order 100 kg of cabbage n receive 100 kg but remove upper leaf which accounts of 13kg. so our actual stock is 87kg for selling n 13 kg as waste.so how to settle it in sap? pls let me know how to manage this process.

thnx in advance,

Vikas