This is a request to be able to account for depot stock levels of non-renewable materials when optimizing field service routes.

In some scenarios, visits require specific consumable materials or parts (for example, wood from a depot). The model should consider the availability of these non-renewable resources when assigning visits to technicians and depots, ensuring that planned visits are feasible given current stock levels.

This would help prevent infeasible plans and improve coordination between inventory management and route optimization.