Transportation

hi all

Requirement is like that systesm should give a warning mesage if my truck is fully loaded for a sales order for example sales order is for 5000 litres and capacity of truck is 4000 than system should give me error message and accordingly i can plan and second thing is that if i have more than one delivery orders for same destination than it should combine into one truck.How to implement this scenario in transportation.

cheers

shalsa007...........