GS1 Coupon Decoder (DataBar / AI 8110)

What Is GS1 AI 8110?

Application Identifier 8110 is the GS1 North American Coupon Application: the data structure that carries a digital manufacturer coupon inside a GS1 DataBar Expanded symbol. Unlike the old UPC-A coupon format, the 8110 string packs the GS1 Company Prefix, an offer code, the save value, the purchase requirement, the family code, and a set of optional fields (expiration and start dates, serial number, additional purchase rules) into one variable-length numeric payload. Each variable field starts with a length indicator telling the scanner how many digits follow, which makes the format compact but hard to read by eye.

Why Decode Coupon Barcodes?

When a coupon will not redeem at the register, the answer is usually in the 8110 data: a save value that does not match the offer, an expiration already past, a family code the item is not assigned to, or a purchase requirement the basket did not meet. Promotion and merchandising teams use a decoder to verify what a coupon actually says before a campaign goes live; POS integrators use it to confirm their scan-data handling matches the printed symbol. This tool breaks the payload into labelled fields, formats dates and dollar values, and summarizes the offer in plain language.

Coupon and POS Integration

Reading a coupon is one step; wiring coupon data into a POS, validating it against the item file, and reconciling redemptions across stores is the real work. I build that integration. See integration services or get in touch. You can also generate and scan the symbols with the Barcode Explorer, or inspect other identifiers with the GS1 Application Identifier Parser. Have questions? Ask James.