When I use webERP I found some problem regarding how to configure by-product available process.
Usual manufacturing(No Problem)
Resource A (x quantity) + Resource B (y quantity) => Product C (n quantity)
Manufacturing with by-product(How to handle this ?)
Resource A (x quantity) + Resource B (y quantity) => Product C (n quantity) + By-Product D (m quantity)
Yes, you can enter a negative item in the bill of material - and negative issue - to receive output from the work order.
Alternatively you can create work orders for multiple output items too.
Phil Daintree
webERP Admin
Logic Works Ltd
http://www.logicworks.co.nz