For 3PL or drop-shipping warehouses to successfully ship your orders, you need to properly set up the communication settings for sending your order and shipment data via FTP to the warehouse and receiving the same back after fulfillment.
1. On the Toolbar, click Settings.
2. On the left sidebar, click Warehouse.
3. Click the wrench icon to the right of the warehouse name, then click Communication Settings.
For more detailed instructions on communication settings, see the following: