Application Identifier (AI) 402 specifies an identification number for the entire shipment. AI 402 is assigned by the seller and may be used throughout the entire transport flow, including on the transport document and in EDI messages.
The GSIN must always begin with the GS1 Company Prefix and the company reference number of the organisation administering the number. The following 9 or 5 digits are assigned by the company, depending on whether the GSIN-8 (short) or GSIN-17 (standard) structure is used. The final digit is a check digit.
AI 00 is used to identify an individual logistic unit, whereas AI 402 is used to identify the entire shipment.