Hi there, @AelYancey.

Thank you for joining the Community. I'd be glad to help share some insights about barcode scanning.
 

Currently, the barcode scanning feature is unavailable in QuickBooks Online (QBO). However, you can add attachments to the invoices to help you manage your books.

Please take note, the file types you can attach are limited to the following:

• PDF
• JPEG
• PNG
• DOC
• XLSX
• CSV
• TIFF
• GIF
• XML

Let me show you how to attach the document:

1. Open the desired transaction.
2. From the bottom left, click Attachments.
3. Browse and select the document you want to attach.
4. Click Open.
5. Click Save and close.

That should take care of it. You're on your way of seeing these attachments to your invoices. I've attached some articles below for future reference:

• Attachments in QuickBooks Online
• How to export reports, lists, and non-posting transactions and attachments

Another option that you may wish to consider is using a third-party application, which can integrate with the software. You can browse available apps at the following link: QuickBooks Apps.

Also, we're always looking for suggestions on how we can make QBO even better and sending us feedback would be a big help. To send your comments and suggestions, just click on the Gear icon and choose Feedback.

For additional help, feel free to reach out to Customer Care support. They have the tools that can help you get this resolved in no time. 

Here's how you can reach them:

1. Sign in to your QuickBooks Online account.
2. At the top right, click the Help icon.
3. At the bottom, click Contact Us. 

That should point you in the right direction today.

Keep me posted if you have any other questions about QBO. I'll be happy to help you further. Have a great week ahead.