I am a beginner using Odoo 9 Community Edition.
I have created Company A and Company B, which are both Vendors. Then I created Product A and Product B and set the vendors in the products inventory tab, respectively.
If I then create a purchase order and choose a vendor (e.g. Company A) and then click on Add an item, both Product A and Product B are shown in the dropdown list. But only one product should be shown (in this case only Product A).
How can I configure that?