As per the Notification No.78/2020 – Central Tax dated 15th October, 2020 , it is mandatory for the taxpayers to mention 6-digit HSN Codes for their outward supplies having AATO more than Rs 5 Crores.
After a few weeks of time , e-Invoice System will not accept 4-digit HSN codes. The date for blocking e-Invoice generation having HSN code as 4-digits will be intimated shortly in this portal.
So, please make necessary changes in your system to report 6-digit HSN codes to e-Invoice Portal and comply by the notification.
In case the 6 digit HSN code is not available, you may raise a ticket at Helpdesk so that it can be included in the system.