Puchases from un registered person

A gst registered regular scheme purchases of some goods from another person.selling person bill format mentioned below.

1.selling trader name :xxxxxxxxxx

2.bill of supply .invoice no.130 Dt:10-08-20

3.invoice  amount rs:35,400/-

4.seller gst no :nil and Aadhar no mentioned(turnover below 40 lacs limit) shown in bill.

Question:

Dealer above purchases invoices allowed  and treatment under gst act.