VERIFIED SOLUTION i

MailStream Plus- Using NDC PT to make both NDC and ASF entry points, and using EP ROL to automatically Roll mail from an ASF to an NDC

A few NDC facilities have associated ASFs (which are sort-of like mini-NDCs).  With rare exceptions, mail that has a ZIP Code serviced by an ASF must be entered at that ASF in order to get the NDC discount.  Entering such mail at the parent NDC will not qualify for the DNDC discount.

The MailStream Plus EP ROL parameter considers the ASF level first, and then EP ROL settings can be used to move the mail to the NDC it's associated with.  See EP ROL positions 32 and 34 and 70.
UPDATED:  October 26, 2017