Short answer: each product or SKU has its own item reference, so a range with many sizes and colours needs a register that says which number belongs to which SKU. This template keeps one line per SKU, with columns for the company prefix, the item reference, the first 12 digits, the check digit and the full EAN-13. Settle the list before packaging artwork is final, and fill the check digit with the calculator.
The columns
| Column | What to enter |
|---|---|
| SKU code, product, size, colour or variant | Your own code and a plain description. If two frame sizes are managed as separate SKUs, they need two lines and two item references. |
| Company prefix (GCP) | The country code plus your company prefix, from your licence. GS1 India says 890 is the country code it was assigned and that Indian-made products carry a prefix starting 890. |
| Item reference | The number you assign to each product or SKU. Shorter company codes leave more digits for the item reference, and the reverse; ask GS1 India for the lengths that apply to your licence. |
| First 12 digits | Company prefix plus item reference, 12 digits in all. |
| Check digit and full EAN-13 | One calculated digit, the 13th, from the first 12. Use the calculator and paste the full number. |
| Notes | Anything that helps the next person: which packaging file the number is on, or the date it was settled. |
A numbering habit worth copying
GS1 Sweden suggests numbering item references in sequence, with the first item ending 001, the second 002 and so on. That is GS1 Sweden's scheme, not a GS1 India rule, so follow the lengths in your own licence. The first line of the CSV is a demonstration line using the example number 952012345678, which is not issued to any product; delete it before you use the sheet.
Download the SKU and barcode register (CSV)
Related: EAN-13 check digit calculator, how an EAN-13 number is built, GS1 barcodes for products sold in India, packaging and labelling checklist, shipping, tax and barcode terms.
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Sources: how an EAN-13 number is built [S26]; private label packaging and inserts [S1]. As of 2026-11-12. Terms are typical and are confirmed in your written quote.