Shopify Source ID
Shopify Source ID helps identify the Web site or POS register that entered each order. If you have one web site, no problem, but you may have many POS registers or apps.
Each iPhone, iPad, or Android device you put Shopify POS on is tracked as a Register. If you accept Cash, Shopify POS will keep track how much you should have for each.
In turn, BigBusiness can use the Source ID to identify the Register and set any presets. For starters, you might want Entered By filled in on each Invoice for future reference.
Shopify POS
Shopify POS is a tool on the Connect toolbar for getting data using Shopify Connect.
Specifically, it gets the customers and sales entered in Shopify POS apps and registers.
Choose a default mapping, or one that you've saved, to import manually, in batches. Or, create a new mapping to save and use with Auto-Connect to automatically update.
Shopify
Shopify is a tool on the Connect toolbar for getting data via Shopify Connect settings.
Specifically, it gets the customers and online orders placed in your Shopify web store.
Using a default mapping, or one that you've modified and saved, you can batch Import. Or, create a new mapping to save and use with Auto-Connect to automatically update.