GCN
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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.