Understanding Universal Product Codes (UPC)
Understanding and Entering Different UPC Codes in Your System
Written by Michael Cook
Updated at January 31st, 2024
What is a UPC?
- A Universal Product Code (UPC) is a barcode symbol used worldwide for tracking trade items in stores.
- It's a numeric system that identifies both the product and manufacturer.
Structure of a UPC
- UPCs are fixed-length, numeric, and consist of two halves.
- Each half can be read independently, with unique encoding for the left and right sides.
- The check digit is the last digit of a UPC and is calculated based on the other numbers in the barcode.
Types of UPC Codes
UPC Version A
- Consists of 12 digits.
- Common in grocery and health-related products.
- Includes left, center, and right guard bars for easier scanning.
- Features parity checks and a modulus 10 check digit for accuracy.
UPC Version E
- A compressed form of UPC A, used for small items.
- Encodes 8 digits, including a number system character and a check digit.
- Automatically includes a '0' or '1' in the number system position.
- Ideal for products with limited packaging space, maintaining readability and efficiency.
Discrepancies in UPC Codes
If you find discrepancies in UPC codes within XSite, follow these steps:
- Find items with both 8-digit (Version E) and 12-digit (Version A) UPC codes.
- Search for these items in XSite using the top search bar.
- Verify the number of digits in XSite's barcode against the product's actual barcode.
- If XSite shows an 11-digit code, check the item's sales by clicking on ‘Inventory’ in the item page.
- If there are no sales, correct or delete the code in the system.