Identify coupons with a GCN
A Global Coupon Number (GCN) is used to uniquely and unambiguously identify a coupon.
| GS1 Company Prefix (54 M1 M2 ...) and coupon number (X1 X2 ...) | Check digit | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5 | 4 | M1 | M2 | M3 | M4 | M5 | X1 | X2 | X3 | X4 | X5 | C |
| 5 | 4 | M1 | M2 | M3 | M4 | M5 | M6 | X1 | X2 | X3 | X4 | |
| 5 | 4 | M1 | M2 | M3 | M4 | M5 | M6 | M7 | X1 | X2 | X3 | |
| 5 | 4 | M1 | M2 | M3 | M4 | M5 | M6 | M7 | M8 | X1 | X2 | |
| 5 | 4 | M1 | M2 | M3 | M4 | M5 | M6 | M7 | M8 | M9 | X1 | |
Please note: a GCN can only be created through a platform, you can therefore not do it yourself. You can create your GCNs through My Coupon Manager. 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 Coupon Barcode Creator for this.