Identify coupons with a GCN
A Global Coupon Number (GCN) is used to uniquely and unambiguously identify a coupon.
Please note: a GCN can only be created through a platform, you can therefore not do it yourself. You can create your GCNs through the Coupon Data Pool. The GCN is encoded in either a GS1 DataBar Expanded or GS1 DataBar Expanded Stacked barcode type. Members of GS1 Belgium & Luxembourg are granted access to the GCN tool for this.