Hi,
HERKL - country of origin
MARA - material maintained at client level - so if you maintained the material at client level - the material origin country is applicable for all plants. You have the single source of material to procure
MARC: it should be maintained at plant level. Can be the material originated for specicif plant only. might be applicable for that plant only.
In general the A material can be originated from US,DE,CH,IN....
from which cournty you want to procure, that depends on the plants or business agreements
Thanks,Kiran