Login to your Quickbooks Online account, open Vendors from the left hand panel, and select the Vendor the vendor you want to filter by. In this example we picked Bob's Burger Joint.
The Vendor ID is in the URL. For example if https://qbo.intuit.com/app/vendordetail?nameId=56 is the URL, the Vendor ID would be 56. The number after 'nameId=' is the number.
Questions? Email us at firstname.lastname@example.org or chat in on the site.