Validation error in gst application

I DONT HAVE ANY SURNAME OR MIDDLE NAME IN ANY OF MY DOCUMENT. MY NAME IS LOVKESH IN ALL THE DOCUMENTS. BUT WHILE FILLING THE GST APPLICATION, IT IS SHOWING VALIDATION ERROR. I CHECK AT INCOMETAXINDIA ABOUT MY PAN. IT IS SHOWING MY NAME LOVKESH AS SURNAME, NOT THE FIRST NAME. SO I FILLED THE SAME WAY IN GST PORTAL, BUT IN THE GST APPLICATION IT IS NECESSARY TO FILL FIRST NAME. HOW TO OVERCOME THIS PROBLEM.