Hello it_shws,

I know how it feels to have waited on the line. I've got a chance look around and found out that ITF-14 format isn't supported with QuickBooks. However, you can use the barcode wizard to create barcodes for your items. Let me guide you where you can create the barcode.

1. Click Edit.
2. Click Preferences.
3. Click Items & Inventory, then Company Preferences.
4. Click Advanced Inventory Settings.
5. Click the Barcodes tab, then mark the Enable Barcodes box.
6. Click Open Barcode Wizard. Follow the steps to complete the barcode scanning setup wizard.
7. Click OK when done.

Please refer to this article for the detailed steps about: Use barcode scanning.

Let me know if you need help with anything else.