As Odoo Standard Behaviour, Product Variant is created automatic
from product template with its attributes and values. For manufactured
product variant, it need Bill of Material to make the Manufacturing
Order. It will be a disaster in level of Users if we have 150.000 Product Variant, then we need to make 150.000 Bill of Material.
Our Features as Solution
Create Selected Product Variant
Create Bill of Material according to Selected Product Variant
Create Production Order for each Product Variant with its Bill of Material
How To Do
Create Bill of Material Template for Each Product Template