The Delhi government has given time till November end for ecommerce companies to start filing mandatory quarterly returns, providing specific information on sellers from the national capital on their platform."Attention! All ecommerce web portals," a half-page ad issued by Delhi government's department of trade and taxes on Monday said. "It is compulsory to enrol with the department by filing form EC-1 online."

Source - http://economictimes.indiatimes.com