AMPL issue/requirement

Is there a way to have the ability of a PO to suggest more than 1 approved manufacturer for a material that is being purchased? For example:

PO 123

Vendor Apple ABC

Internal p/n TESTING

Approved Manufacturer 123, Approved Manufacturer p/n abc

Approved Manufacturer 456, Approved Manufacturer p/n def

Approved Manufacturer 789, Approved Manufacturer p/n ghi

Approved Manufacturer 777, Approved Manufacturer p/n klm

So the company is telling the vendor that for this one material we are purchasing, they can go to any of these 4 approved manufacturers. On the PO it only allows 1 entry and not multiple entries without creating multiple line items.