GCN

GS1 identification key for paperless coupons and discount offers.

Definition

The GCN identifies an individual coupon offer. It is built from the GS1 Company Prefix, a coupon reference and a check digit, optionally followed by a serial number, all carried by AI (255).

Origin

Defined in the GS1 General Specifications (GCN key, Application Identifier 255), published and maintained by GS1.

Example in context

GS1 element string: (255) 0614141123452 12345 — a GCN with its check digit followed by a coupon serial number.

Related terms

• GS1 Application Identifier — AI prefix that qualifies each data field.
• GS1 Company Prefix — basis for constructing the key.