The USM Subway is a way to explain the USM concepts with the analogy of a subway. Check it out.

USM-subway-workflow-model-EN-v5 - Metro Designer - Tennessine

• USM ALL processes
• WISH
• CHANGE
• RECOVER with OPERATE
• RECOVER with CHANGE
• OPERATE

All workflows

(1) Agree (WISH)

(2) Change (RFC)

(3) Recover (INCIDENT (calling Operate))

(4) Recover (INCIDENT (calling Change))

(5) Operate (SERVICE REQUEST)