1. What is SSCC Check Digit?

The SSCC (Serial Shipping Container Code) check digit is a single digit calculated from the 17-digit SSCC to ensure data integrity in GS1 barcode systems. It helps detect errors in scanning or data entry.

2. How Does the Calculator Work?

The calculator uses the GS1 check digit formula:

Where:

• \( \text{sum} \) — Sum of weighted digits (alternating weights of 3 and 1)
• \( \mod \) — Modulo operation

Calculation Steps:

1. Assign weights: Starting from the right, alternate between 3 and 1
2. Multiply each digit by its weight
3. Sum all the weighted digits
4. Calculate: (10 - (sum % 10)) % 10

3. Importance of Check Digit

Details: The check digit is crucial for error detection in supply chain management, preventing shipping errors, and ensuring accurate scanning of logistic units.

4. Using the Calculator

Tips: Enter the 17-digit SSCC (without check digit). The calculator will compute the check digit and display the complete 18-digit SSCC.

5. Frequently Asked Questions (FAQ)

Q1: Why is the check digit important?
A: It helps detect common data entry errors like single-digit mistakes or transposed digits.

Q2: What's the difference between SSCC and GTIN?
A: SSCC is used for logistic units (cases, pallets) while GTIN identifies trade items. Both use similar check digit algorithms.

Q3: Can this calculator validate existing SSCCs?
A: Yes, you can enter the first 17 digits of an existing SSCC to verify the check digit matches the 18th digit.

Q4: What if I get an invalid check digit?
A: Double-check your input for typos. If the problem persists, verify the original number with your GS1 provider.

Q5: Are there other GS1 check digit calculators?
A: Yes, the same algorithm is used for GTIN-8, GTIN-12, GTIN-13, GTIN-14, and other GS1 identifiers.