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Each different type of trade item is allocated a different number and, for ease of administration, it is recommended that companies do this sequentially (001, 002, 003, etc.). T14 is a check digit, which follows the standard modulo 10 calculation. [5] Note that GTIN-12 numbers can be encoded as GTIN-13 by adding a padding zero in the T2 position.
Global Location Number at GS1 website; GS1 official site; GLN (Global Location Number) Check Digit Calculator, and documentation, at GS1 official site; Check Digit Calculator, and documentation in pdf format, at GS1 US official site Archived 2016-11-21 at the Wayback Machine (states the same mechanism for GLN and GTIN-13)
For instance, the UPC-A barcode for a box of tissues is "036000241457". The last digit is the check digit "7", and if the other numbers are correct then the check digit calculation must produce 7. Add the odd number digits: 0+6+0+2+1+5 = 14. Multiply the result by 3: 14 × 3 = 42. Add the even number digits: 3+0+0+4+4 = 11.
Numbering the positions from the right (code aligned to the right), the odd data digits are always weight of 3 and the even data digits are always weight of 1, regardless of the length of the code. Weights for 18-digit SSCC code and GTINs (GTIN-8, GTIN-12, GTIN-13, GTIN-14):
As there are an odd number of digits in the middle of the string, the odd one must use a different code set, but it makes no difference whether this is the first or last; 16 symbols are required in either case: [Start B] 0 9 8 x 1 [Code C] 23 45 67 [Code B] y 2 3 [checksum] [Stop], or [Start B] 0 9 8 x [Code C] 12 34 56 [Code B] 7 y 2 3 ...
GS1 UK Office: GTIN-8 allocations 9625–9626: GS1 Poland Office: GTIN-8 allocations 9627–969: GS1 Global Office: GTIN-8 allocations 977: Serial publications 978–979 "Bookland" – 979-0 used for sheet music ("Musicland", ISMN-13, replaces deprecated ISMN M- numbers) 980: Refund receipts 981–983
This section can include the car’s serial number and other manufacturer-specific identifying information. Digit 10 indicates the car’s model year. Digit 11 shows which plant assembled the vehicle.
Both the Universal Product Code and EAN-13 identifiers that are still found on many trade items can be mapped into a 14-digit GTIN identifier, by padding to the left with zero digits to reach a total of 14 digits. An SGTIN EPC identifier can therefore be constructed by combining the resulting GTIN with a unique serial number and following the ...