Purchase order and purchase invoice required help

we create purchase order in nos but suppler bill me KG .
how can i add entry of it.

we mfg agricultural implements. we order custom size and weight profile cutting. to suppler .
1> suppler take order in nos or set . and suppler send material as per order in pcs or set .
but suppler make bill in per kg or mt .and rate is per kg .

how can ad this entry to purchase invoice.

hmm…dont know, never heard of NOS :no_mouth: must be an weight india right?

maybe you can translate the nos <> kg thing with jinja templating language, if you multiply it with the correct exchange translation formula.