Quantity in stockkeeping unit is zero

hello all

i have this problem during recording PP order by co11n, i have this scenario:

Example:

Base unit of measure: KG

Alternative UM: G

Conversion rule: 1 KG = 1000 G

Requirement quantity in unit of entry: 0.240 G

Conversion in base unit of measure: 0.240 G / 1000 = 0.000240 = 0.000 KG

question:

it's possible automatic rounding to 0.001 KG so as not to create error?

many thanks