L        Line Item Only
R        Originator Assigned
S        Entire Shipment
W        Pallet Number
X        Pallet Configuration Number
AA       SSCC-18
AI       UCC/EAN-128 Application Identifier (AI) and Data
CA       Shipper-Assigned Case Number
CP       Carrier-Assigned Package ID Number
DZ       Receiver Assigned Drop Zone
GM       SSCC-18 and Application Identifier
MC       Master Carton Number
PB       Premarked by Buyer
SI       Self-Identifying Container via Radio Frequency ID Device
SM       Shipper Assigned
SR       Shipper Assigned Roll Number
SS       Shipper Assigned Skid Number
UC       U.P.C. Shipping Container Code
UP       U.P.C. Consumer Package Code (1-5-5-1)
ZZ       Mutually Defined