2017-18 annual return

Ramesh patel (Business) (190 Points)

11 June 2020  
What's process to inform GST dept about missed sales of exempt good reproted for financial year 2017-18 for composition scheme trader ,as it will lead to turnover mismatch in GST return and that quoted in income tax return?Is there tax liability on sale of nil rated good by composition scheme trader and will there be penality on reporting missed sales of exempt good?
thanks