As per GST Rules in India:

✅ Every registered person is required to display their GST Registration Certificate in a prominent location at their principal and additional places of business. (Penalty for non-compliance - Rs.50,000/- per place of business)

✅ It is mandatory to display the GSTIN on the name board exhibited at the said places. (Penalty for non-compliance - Rs.50,000/- per place of business)