Making a booking with online payment you can ask for an invoice, for most of the italian car parks available on MyParking.

During the booking procedure, before paying, you will need to select "Request Invoice" and fill in all fields.

Please note that it is not possible to request an invoice after the booking has been completed and it is not possible to change the data entered once the invoice has been issued.

Some Italian car parks issue the tax document directly so, during the reservation procedure, you will not see the option to enter your invoice details.
In this case, as for bookings to be paid at car park or for bookings in Spanish parkings, you will have to request the invoice to the parking attendants directly, on the day of entry.