A shipping license is:
- A consumable that allows you to transfer items between farms via the storage system.
- Can either be purchased from the market, or gained by completing tasks.
- Is required for each farm that you want to transfer items between.
- Is permanent, and only need to be purchased once per farm to add it to the pool of interconnected storage.
- Is not needed for the Home Farm, because it is the primary farm that the shipping licenses connect to.
You get a free shipping license with the Hanging Gardens and Farmers Square farms.