Bibek Modak 20 May 2020
I am going to launch my own e-commerce application and just want to sell my own products as a vendor, bought from a dealer. Do I need any GST number when my dealer already has paid the GST? My annual turnover is less than Rs.20 lakhs.
Vaibhav Khatri 20 May 2020
[vii] persons who make taxable supply of goods or services or both on behalf of other taxable persons whether as an agent or otherwise;
[viii] Input Service Distributor, whether or not separately registered under this Act;
[ix] persons who supply goods or services or both, other than supplies specified under sub-section  of Section 9, through such electronic commerce operator who is required to collect tax at source under Section 52
I think you don't need registration still you should see weather above provisions affects you
CA Akshay Hiregange (Partner Designate) 20 May 2020
If you are conducting a business which requires a digital platform you're a e-commerce operator, although, unless you sell goods/services of another person and collect amounts through your platform, you need not deduct TCS.
The mandatory requirement u/s 24 for e-commerce operator who is required to deduct TCS is there, notification 65/2017-CT was later released to ease the registration, and limit was brought in upto Rs. 20 lakh. (subject to certain e-commerce services, not the one mentioned in the question).
Hope it is clear.