Clarify bar code use on primary packaging

Depending on the number of products packaged in the primary packaging, the barcode could be EAN13 (1 single product) or EAN14 (several products)
In EAN14 barcode:

• The first digit is the "Logistic Variant", also named as "Packaging indicator".
• The next 12 digits represent the product number. Generally, this the EAN-13 number without the check digit.
• The last digit is the check digit. ActiveBarcode calculates this digit automatically

More information on barcode: https://www.activebarcode.com/barcode/ean14/
Last digit calculation: https://www.gs1.org/services/check-digit-calculator

Released for: Schneider Electric New Zealand