510 Points
Joined September 2016
No need to show billwise purchase details in GSTR3B. Only you have to show total purchase value and GST (IGST, CGST, SGST and cesses if any) paid and claim it as input credit (ITC) and pay the GST. It is only a temporary return to make sure that taxes are paid by 20th of every month. Any mismatch will be adjusted when you file regular returns GSTR1 ( for sales ) and GSTR 2 ( for purchase details)