Currently it is not allowed to create several item barcodes for an item variant with the property „UseForPrinting“ checked. This is checked in the validateWrite-method of the InventItemBarcode-Table. This also includes the unit of the item variant.

So if one item variant has several units and each unit has a corresponding barcode, only one of the barcodes can be marked as “UseForPrinting”. If “UseForPrinting” is used to find a barcode and the find method also includes the unit, no result is found.

Resolution would be to allow more than just one Barcode to be marked as "UseForPrinting" - esp. in the context of using multiple UOMs it is essential to be able to print more than just one Barcode.