| Source Element | Destination Element | Flow |
|---|
| KCMO Parking Management | Payment Device | payment device update |
| Payment Device | request for payment |
| Payment Device | KCMO Parking Management | payment |
| KCMO Parking Management | payment device information |
| Smart City Kiosks | payment |
| User Personal Computing Devices | payment |
| Vehicle | payment |
| Vehicle | payment device information |
| Smart City Kiosks | Payment Device | payment device update |
| Payment Device | request for payment |
| User Personal Computing Devices | Payment Device | payment device update |
| Payment Device | request for payment |
| Vehicle | Payment Device | payment device update |
| Payment Device | request for payment |