GTIN (Global Trade Item Number)

Attribute Name: gtin
Data Type: Integer
Max Length: 14
Repeatable: No
Code List: No
Applies to: All Levels
NPC Xpress Rail Attribute: Base Unit GTIN
Last Modified: 05/02/2024

Commonly referred to as a barcode number, this uniquely identifies a trade item. 

Valid GTINs in the NPC are: GTIN-14, GTIN-13, GTIN-12, GTIN-8.

A GTIN on the NPC must always be entered with 14 digits. Use leading zeros for GTINs with less than 14 digits.


Utilise leading zeroes for GTINs which do not contain 14 digits. For example:

GTIN-13 as 09312345678914, GTIN-12 as 00018765439218, GTIN-8 as 00000093456838

Useful Tips:
  • The check digit of the GTIN must always be correct. A check digit calculator is available at

  • This field is mandatory and must always be provided at all levels of packaging

  • Variable Unit GTINs must begin with either “9” or “020” through to “029"