The route describes how the materials in an outbound delivery are to be transported from the shipping point to the destination.
Route determination is performed automatically for each delivery-relevant item in the sales document, using specific data from the customer master, material master, shipping point, and possibly the document type of the sales order (for example, Rush Order).
The country and departure zone assigned to the shipping point (in the configuration)
The shipping condition from the sales document type or the customer master of the sold-to party or ship-to party (depending on the configuration of the sales document type)
The transportation group assigned to the material in the material master record
The country and transportation zone assigned to the ship-to party in the customer master record
In the sales order item, you can manually overwrite the route determined by the system. In the outbound delivery, you can redefine the route based on the weight (weight group). The configuration of the delivery type determines whether the route must be redetermined.
To configure route determination, in your configuration environment, locate and select the Maintain Route Determination configuration activity.