Keystroke reads bar-coded coupons that are issued by the manufacturer or vendor, and follow the standards set by the GS1 US (formerly Uniform Code Council).
For more information on GS1 US (formerly UCC) standards, visit the GS1 US web site:
www.gs1us.org/what-we-do/about-gs1-us/mission-history
See:
Coupons: What Keystroke Does
Coupons: Coupon Code Example
Coupons: Setting Them Up
Coupons: Inventory Items to which Coupons Apply
Coupons: Creating the Special Coupon Item
Coupons: Entering a Coupon on a Transaction
Coupons: Applying the Coupon
Coupons: Change Line Item Product Codes
Coupons: Change Line Item Product Codes - Merge Same Item Settings
Line Item Entry Parameters
Sales Manager Contents