Document each state, entry requirement, accountable role, expected time, allowed transition, evidence, and final confirmation. Then list common exceptions: missing input, contradictory status, unavailable capacity, policy conflict, duplicate request, external timeout, rejected review, changed priority, or customer dispute. Record how the present process resolves each one and where ownership is unclear.
Classify exceptions by frequency, consequence, reversibility, and specialist need. Frequent low-consequence gaps may be suitable for guided resolution. Rare high-consequence cases may require immediate escalation with no machine recommendation. Unknown cases should default to a safe hold. The taxonomy should be reviewed as real exceptions appear rather than assumed complete at launch.
Add dependency direction to the map. An item may wait on a customer, supplier, specialist, policy owner, or external system, and each wait needs a different communication and escalation rule. Calling all of them blocked prevents the operations owner from distinguishing controllable queue design from an external condition that needs expectation management.