If the determination of assessee goes wrong i.e. assessee has short paid any taxes or not paid any taxes or has wrong availed and utilized any input tax credit or has erroneously been refunded, then, under such circumstances demand would be raised by the GST officials by way of issuing GST notices - to be called as Show cause notices under taxation parlance.
Show cause notice is the first stage in any investigation in tax laws. In Goods and Services Tax Act, show cause notice is to be issued before any penalty is levied or demand is raised. SCN is also required to be issued while taking action for payment of Goods and Services tax collected from any person which has not been deposited with the Central Government.