As reported by :
https://groups.google.com/d/msg/idempiere/4gKIN5ZORgM/FnJqihraAwAJ

We use the product BOM to assemble some products. When we assemble a product, some "by-products" can come out (parts taken out from the original product) which can be sold separately.

In the adempiere 361, the BOM quantity allows negative values which increment the inventory automatically. But in iDempiere 3.1, the BOM quantity must be greater than 0.

How can we achieve the same result when using iDempiere 3.1?

Thanks!

Nelson Chan

and

It seems the column "BOMQty" under table "M_Product_BOM" has the "Min. Value" set to "0.0000000001" so I cannot enter any negative value. I am able to enter negative value once I clear that field.

Nelson Chan