Warehouses are an integral part of the Spark Pay online stores system. It is mandatory that there is a default warehouse. This is used to determine the origin address of your packages.
If you ship from multiple zip codes or from distributors, you can define these origins as Warehouses.
To define a Warehouse, click Settings > Shipping > Warehouses
To set the Warehouse for a specific product, Edit the product. Here you can specify the Warehouse from the drop-down menu.
This can also be set through the Data Import tool as well.