As of now, TCS is postponed till next notification, we as a seller are
not required to indicate our supplies through ecommerce, and we need to
fill as a normal seller. I got this information from amazon seller
dashbord.
Filling gstr 3b doesn't mean gstr1 is not required. The concern is that,
what will happen as we are unable to enter invoice as the sales are made
through ebay ( an ecommerce operator ) and entering ebay's gstin gives
error as "invalid gstin entered" ...