How can add barcode to the invoice for each item

Hi there, @tahahajjoul.

Currently, QuickBooks Online doesn't have a direct connection to the barcode scanner and don't have the option to add one to the products. Although, we've got you some third-party applications that have this kind of functionality and can sync with QBO. You can go to the Apps menu in the left pane and search for any barcode scanning apps. 

You may consider checking our blog website to keep you up-to-date on the feature release.

I've added this reference page to help you manage your lists, sales forms, and items in QuickBooks Online: Adding Products and Services, Customers, and Vendors to Lists. This also contains video tutorials such as setting up products and services or customer lists.

I'll be here if you have other questions with QuickBooks Online. Don't hesitate to tag my name in the comment section. I'd be happy to help. Take care.

@tahahajjoul 

You may need an inventory management app to do so.

Quickbooks needs to add this field. With so many online platforms now, we need the ability to have both UPC codes & Item numbers

I hear you, and I can see the benefit of using UPCsand item numbers on invoices in QuickBooks Online (QBO), @sari2. That's why I'm here to share further details about this.

We take your suggestions for adding UPCs and item numbers as an opportunity on which area of the product's invoicing feature we need to improve on. With this, I encourage you to send feedback or product recommendation.

Your valuable feedback will be forwarded and reviewed by our Product Development team to help improve your experience while using the program. Here's how:

1. Go to the Gear icon.
2. Select Feedback.
3. Type in your recommendation in the Share your feedback field.
4. Click Next.
5. Follow the on-screen instructions to complete the process.

I've attached screenshots below that show the first four steps.

On top of that, I'd recommend visiting our feedback forums to keep you updated with the latest software improvements and enhancements: Customer Feedback for QuickBooks Online.

Also, QuickBooks gives you the tools to create attractive and professional-looking sales forms. This way, you can add info that matters most to your business. If you wish to learn more about this, you can check out this article: Customize invoices, estimates, and sales receipts in QuickBooks Online.

I'm all ears if you have other invoicing concerns or inquiries about managing your products/services items in QBO. Just reply here or create a new thread. I'll be right there with you. Take care always.