Amendment in gst regn.

Go to service and core. or non core select you will get all details

Are E-commerce or you are selling on behalf of. E-commerce website (Is Amazon,. Flipkart)

If you are selling on behalf of E-commerce then you can continue under Voluntary Registration.
And
If you are E-commerce Operator & collecting TCS accordance with. Section 52 ,. then have apply for fresh Registration in Form REG-07 (Cannot make amendments in exisiting Registration)