Thanks for visiting the Community today, @ourmaninindia.
I know how relevant for you to add the customer's name and SAC codes in the GSTR2 - 3.
At the moment, you can only add SAC codes to your products and services.
- Select Add HSN/SAC for items, then click Add a product or service.
- Select product type Inventory/Service/Non-inventory/Bundle.
- Enter all other necessary details, then add HSN/SAC code.
You can also add SAC codes or import SAC codes in volume for existing products. Check out this link for your reference: How to add HSN and SAC codes to your products and services.
Feel free to visit the Community again if you have additional concerns. We're always around here to help.