Global Coupon Number (GCN)

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.