how to amendment GSTIN form.

shubham Sharda (8 Points)

11 August 2017  
Respected,
How to make amendments in GSTIN profile after its registration.
please guide.
By mistake in 'activity of business' section retail business is submitted instead of wholesale business.
And also only one HSN code is mentioned in GSTIN form while registering. At the time of registration i was not aware of to mention atleast 5 HSN CODE is mandatory.
I want to correct them before filling GSTR-3B by its last due date i.e.,20th Aug.
Thankyou