I'd like to be able to look at my Inventory by Vendor - including going back in time - so I want to know how to add the Vendor to each line in the Inventory at Date Report.

This helps me know how much I am carrying and turning for my large Vendors - something I am asked for all the time by my auditors.

The PO is listed, so Odoo knows which Purchase Order the products came in from, what about the Vendor?

In my current system, this is the "Inventory Report by Vendor"