When creating a BOM in Business Central it is possible to setup a fixed quantity, which means that whatever quantities is produced, system will select the quantity from field 'Quantity per'.

What is missing is fixed quantity per serie size.

E.g. If production quantity is 100 and one of the item in BOM has a fixed quantity = 1, then system will select 1.

If the BOM item is a cardboard box that can contains 100 units of my produced item, then I need 2 cardboard boxes if I produce 200 units.

Therefore the functionality 'Quantity per serie' is missing.