Can't pass receive inspection - Precise Value Problem

We have a part that we bought in 6 oz bottles but we inventory in gallons (the little bottles were all we could get on short notice). We are trying to pass them through receiving inspection but are getting an error. The precise value is .46875 but we can only enter 2 digits. It keeps saying the ‘Total of passed and failed quantities must equal the Receipt quantity in order to finish inspection’.

Can you change the UOM’s setting?