Adding landed cost for internal transfers

Hi, We have internal locations which are all over the city where we collect plastic for recycling and later move it to the factory. I would like to add landed cost i.e. transport cost to the internal transfer. We have transporters who bill us based on the Kg's they've delivered from the collection points. I would like to be able to add this bill and connect to my internal transfer and distribute the cost to the quantities delivered. I am however not able to pick the internal transfer in the landed costs.