The happy path is not the operation
Operational products look simple in prototypes because prototypes omit the work that does not fit. Real operations include late inputs, reversals, partial completion, reassignment and human judgment.
If the system cannot represent those states, teams create a shadow operation in spreadsheets and chat. The interface may remain polished while the product loses authority.
Model decisions and exceptions
Good operational software records why a state changed, who can resolve an exception and what downstream work must be reconsidered. It provides safe repair actions instead of asking operators to work around the model.
Measure operational confidence
Completion time matters, but so do reconciliation effort, exception age, manual corrections and the distance between the system record and real-world status. Those measures reveal whether the product actually runs the operation.