Delivery unit in sales order

Hi friends,

I have struck with an issue, We are delivering same materials in two different sales areas, requirement is for one sales area deivery unit is say 20 for another 50 ie in brief in Material master so far we have 1 DU = 20 EA which is at that particular material level not at sales area level. Now i want that to be on sales area

Is it possible in sales area level?

Thanks in advance!!

Regards

Jack