MF42N _ problem to record scraps _ KKF6N issue
if this message appear
check available routing for the material
check available production version for the material
check MRP 4 ( production version & repetitive manufacturing )
check cost estimate MM03
ex:
check product cost collector
t-code KKF6N
the product cost collector have to be in relation with le last cost estimate calculated ( see MM03 - view costing 2)
if all data are correct
you can use MF42N for the material