Hello there, sharzard,
You'll want to use alternate lookup. It is an optional, user-defined item identifier that can be used to locate and quickly list items on documents.
You can find more information here: Point of Sale barcodes and UPCs defined.
I also recommend reaching out to our QuickBooks Point of Sale chat support, they'll be able to guide you on what to do.
Stay in touch with me if there;s anything else I can help you with.
