Node Unassignment Reason

[PranoyKumar3]

What language and solver does this apply to?
Python / Routing

Describe the problem you are trying to solve.
Google OR-Tools has a feature to make visiting node optional by using AddDisjunction, which gives the solver the freedom to drop a node if it's unable to satisfy a constraint. But is it possible to know due to which constraint violation was the node dropped?
(In case of CVRPTW, the reason for dropping a node could either be that vehicle max capacity has reached or the node could not be reached within the particular time-window.)
Describe the solution you'd like
It would be good if there was a feature which could address the unassigned nodes along with the unassignment reason.
Describe alternatives you've considered

Additional context
Add any other context or screenshots about the feature request here.

[lperron]

The node could be dropped because the solver did not manage to insert it, even it if was possible.