To enter or add HSN Codes or GST for items in inventory, follow the steps given:
Step 1:
Select the Inventory module and then select the Create Items under the Item Details menu.
(Inventory-->Item Details-->Create Items)
Step 2:
Select the Manage Items HSN Codes/GST option.Select the respective Category, Sub Category,
Category Type, Item then click on Get.
Step 3:
Select the Items accordingly and update the HSN Code and GST then click on Save.