What are the four fields as search keys for determining the route automatically?

To determine the route automatically the data is normally defined in master records and customizing:

• Departure zone in customizing for shipping point
• Shipping condition from the sold to party which is found in the customer master record – Sales area data – Shipping Tab
• Transportation group in the sales-specific material data under Sales: General/Plant Data Tab.
• Transportation zone in the general data for the ship-to party in Customer master record.