Go to the Polish road payment system e-TOLL website https://etoll.gov.pl/ and select login to the account

Select the option to log in with login and password

Enter your login and password into the fields and click Sign in Logowanie do IKK/Sign into OCA

Select the client and go to the Devices tab Urządzenia/OBE from the left menu

Click Create device Utwórz urządzenie/Create OBE

In the field that appears, enter the device identifier in the format Z25-AA00BB-0 and click Create device Utworz urzqdzenie/Create OBE

Select Assign device to vehicle Przypisz urzqdzenie do pojazdu/Assign OBE to vehicle

Select the client, vehicle number and click Assign device Przypisz urzqdzenie/Assign OBE

In the panel that appears on the right, click Activate Aktywuj/Activate

Click the Confirm button Potwierdz/Confirm

You can check which device is assigned and active for the vehicle in the Vehicles Pojazdy/Vehicles tab from the left menu

The active device will be displayed next to the vehicle