Auto Source determination not happening

Hi Guruz,

I have a material assigned to a quota arrangement usage in material master - MRP 2 View.

Source list maintained for the material/plant with 2 vendor codes and both releveant for MRP '1'

Quota arrangement maintained with proper validity periods.

But when i generate purchase requisitions via MRP, the source assignemnt is not happening. MRO generates PRs but the source of supply is blank. I have to assign the source either by ME57 or via 'assign source' tab in PR item details.

I have maintained EVO parameter in my user id also.

Not sure what I have missed. Please help!

Regards

Greg