About NOTICE OF CLARIFICATION IN FORM REG-01

sagar tatti (75 Points)

05 February 2020  
I have upload form REG -01 PART-B.
on 2-2-2020 and I hv ARN NO also Today i have received one sms from gst portal Notice seeking for clarification against application for Registration form REG-01.with in 7 days,
my doubt
01.what it means
02. what should I do next?
03. where I upload clarification certicate in portal.

plz advice me🙏