Application Identifier 02 is used to specify the GTIN number of the contents of another device and must always be used with application identifier 37 for quantity and Application Identifier 00 for Serial Shipping Container Code.
AI 02 can only be used on a logistics unit.
Example:
A customer orders 3 of a kind packages, and the supplier has not defined a commercial unit corresponding to the 3 packages. The colles are put on a wooden pallet, foiled and labelled with AI 02 for content (the GTIN number of the packages), AI 37 for number (3) and AI 00 for SSCC.
GTIN number + quantity: