not able to add non integer value for duration term for service items in fusion sales order

As per business requirement, we want to make service contract for non-integer service duration, for example 0.5 year or 1.5 month etc.

but when we input non integer value in duration term it gets errored out and display below message

Make sure duration contains a numeric, whole number without decimal values, and duration period contains a time period, such as Year, Month, or Day. (DOO-2685915)

if anyone knows, please guide how to input decimal values in duration field, it would be very helpful

Thanks
Mihir Chuahan