I have a product can either be Buy from a vendor or Manufacture on my own.
In general, Buy is preferred and used most. I'd like to let the sales person to choose Manufacture if desired.
In route setting, I made both the Buy route and Manufacture route Applicable On Sales Order Lines.
In the product template form, under Inventory tab, both Buy and Manufacture are ticked.
But when I confirm a sales order, the Manufacture route always prevail.
In the product template form, under inventory tab, when only Buy is ticked,
On confirming a sales order with the line route_id set to Manufacture, the Buy route is selected.
It seems that the route_id on Sales Order Lines does NOT do anything.
Does anyone know what the proper setting of route_id on Sales Order Lines is?
The official documents says it should work
There's also this post saying the importance of routes
https://www.odoo.com/forum/help-1/inventory-routes-procurement-rules-189424