Deduction for 529 Contribution via UGift

In addition to contributions for my own kids, I made a 529 contribution to my nephew's daughter via UGift.  Everything says this should be deductible  in PA.  On the form, TurboTax is requiring the recipient's social security number (XXX-XX-XXXX in numeric only form) even though UGift does not provide it (to allow that info to be kept confidential.)  How do you complete the form when the contribution was made via UGift?