What does this mean, it makes no sense.
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Note
Be careful to add barcodes directly on the product variants and not on the template product. Otherwise, you won’t be able to differentiate them.
Activate the Barcodes in Odoo — Odoo 17.0 documentation
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I thought barcodes had to be unique, not sure how you could get 2 products with the same barcode.
Or does the system let you put the same barcode on product variants,*(no I tested it The operation cannot be completed: duplicate key value violates unique constraint "product_product_barcode_uniq" DETAIL: Key (barcode)=(23) already exists. )
What makes this even weirder is that the barcode disappears off the product template item once you create it, is the field just hidden and you can accidentally write to it?