V13, 2 almost identical item but 1 has Discount & margin another don't

Hi all,

I notice there is a strange situation where both item has price list (Standard buying & Standard Selling) and also Item price but 1 item can be discount on the same purchase invoice child table but the other item can’t (the rate will set to 0.00 if discount is entered)

I compare side by side both items have very similar setup, don’t know why this occur. Any idea anyone?


Ok, I got it sorted out myself.