Unregistered purchase Exported

Himanshu Rupela (Student CA IPC / IPCC) (451 Points)

17 January 2022  
I have bought products from local unregistered vendors. Value 20 Lakhs

Then I exported the products with LUT.

1. Do I need to pay GST under reverse charge?
2 If 1 is yes, how can I get refund and from which form?