The xml transaction feed contains a value called 'store_id' which is typically a number such as 13069, as far as i can tell, each store has a unique id which is used in this field.
How can i find out the ID of each of my stores (in the administration system)?
We don't currently have a way to see the store ID within the actual visible content. If you view the markup that makes up the store dropdown though in the administration - that will contain the store ID's as the value for each option within the select. I hope that helps!
For anyone else looking at this in the future, search for a div with 'store_id' as the ID within the source of the foxycart admin home page (https://admin.foxycart.com/admin.php).
The values of the option elements within that div represent the store ID numbers.
FC.json.store_id
for newer versions of FoxyCart.