ecommerce seller or aggregator no need to register for GST if his turnover is lessthan 20 lakh

 https://www.cbic.gov.in/resources//htdocs-cbec/gst/notfctn-65-central-tax-english.pdf

e-commerce sellers/aggregators need not register if total sales is less than Rs. 20 lakh. Notification No. 65/2017 – Central Tax dated 15th November 2017

https://cleartax.in/s/taxable-person-gst