A Venue ID is automatically generated when a venue is added to an organization. There are Fathom API calls that require the Venue ID as an input parameter. The simplest way to obtain the Venue ID is using Fathom Control. To do this:
1) Login into Fathom Control. At the main page select the desired venue.
2) The browser address bar will display the Venue ID. In this example the Venue ID is 38b5f7ca-d327-4287-b613-73088d3d3c57.
The Venue ID can also be obtained programmatically using the List Venue API.