Rounding of material quantity in order

Hi All,

I am using material whose base unit of measure is KG & unit of issue is gm in material master. This is externally procured material with rounding value 0.500 in MRP1 screen. No rounding profile maintained in material master.

But when I create planned order for another material, in which above material used as component. Quantity of this material is rounded off to 0.044 kg instead of 0.04305 kg.

Can anyone explain how this happens.

Thanks in advance.