In fact SSCC is simply and unique identifier for particular logistics unit (ie. the one indivisible thing that you send from point A to point B) and does not in

In fact SSCC is simply and unique identifier for particular logistics unit (ie. the one indivisible thing that you send from point A to point B) and does not in any way describe some kind of class of things sharing the same geometry. In the global logistics context GS1 managed SSCC namespace tends to be used only for "large" items (ie. pallets and LTL outsize boxes) while typical package services use either completely proprietary labeling or something that vaguely follows UPU rules for labeling of registered mail. IIRC the Code-128 barcode on FedEx packages contains GS1-128 datastructure that purpotedly encodes SSCC, but I'm not exactly sure that it in fact is correctly formatted SSCC and not just some kind of fedex-proprietary number.