Which is the best way to map truck sales in sap without dsd module

Dear All,

Our client has direct store delivery process which needs to be mapped in sap, i wanted to know which os the best way to achieve this without dsd module. Client requiremnt is they should be able to track the inventory in the truck.

From each location there are around 15 to 20 trucks that move out to deliver or sale the product to different shops.

Can you please help me to give me some brief overview or insight on how to achieve this, it would be of great help to me.