I'm pretty sure
Delivery won't work because I need the pickups to be directed to a secondary location (landfill) and not back to the original depot.
Deliverys also can be started from the landfill after a container has been emptied as opposed to starting from the depot.
The solution I'm working on implementing is adding a
Shipment from each depot and landfill to each location and from each location to each landfill, then applying hard constraints to only allow one
Shipment per location pair. I realize this will probably be pretty inefficient, but I am not sure of another way to implement this?
Any guidance is appreciated.