Who can assign a GS1 GTIN™ to a product?

Generally, the creator or manufacturer of a product assigns its GS1 GTIN™. If you are the creator of the product, you are responsible for assigning a GS1 GTIN™ to your product. If you are selling a product created or manufactured by another company, you must use the existing GS1 GTIN™ that has been assigned to that product. If you don’t know it, you should contact the product’s supplier or manufacturer to find its GS1 GTIN™. You can never add a GS1 GTIN™ to a product that already has one. Occasionally, you may get a product without GS1 GTIN™. In that case, if you are willing to take responsibility for the trade item declarations, you are allowed to assign the GS1 GTIN™.