Additional hsn no. to be add

Sumanth Kumar G (Asst. Manager) (58 Points)

25 July 2017  

We are a manufacturer of alloy steel castings and register under GST with the HSN No. 7325 99 20.  Now one of our customer asking us to supply cast iron  items which will comes under 7303 00 90.  Now we have to add the HSN in our profile or can we supply without amendment the certificate?