It's good to see you here, @123146469290319,

Adding HSN codes is currently doable in the web browser. While this is not yet available in the mobile app, you can login to your mobile browser or a computer to add the code.

Don't worry, it's just a few clicks to do. You'll be surprised how easy it is. To get started, follow the steps below in your QuickBooks Online account:

1. Sign in to QuickBooks in a browser.
2. Tap the Gear icon then choose Products and Services.
3. Click the New button.
4. Pick a product type (Inventory/Service/Non-inventory/Bundle)
5. Along with other details, add HSN/SAC code.
   

I'm also adding the steps to edit existing products and services below, just in case you need it in the future:

1. In the Products and Services page, find the item you need to modify.
2. Press Edit below the Action column.
3. Add HSN/SAC code

Know more about HSN/SAC codes and how to add them in QuickBooks, please see the following links:

• About HSN and SAC Codes in GST
• How to add HSN and SAC codes to your products and services

Thanks for visiting the QuickBooks forum. If you need anything else, just reach out back to me so I can help you further. Have a great rest of your day!