Product Identification Codes

Code	Value
BL	Brand/label
BP	Buyer’s part number
CB	Buyer’s catalog number
CN	Commodity name
IN	Buyer’s item number
MG	Manufacturer’s part number
MN	Model number
PI	Purchaser’s item code
PN	Company part number
SI	Standard Industrial Classification code
SK	Stock keeping unit (SKU)
ST	Style number
UA	U.P.C./EAN case code (2-5-5)
UD	U.P.C./EAN consumer package code (2-5-5)
UN	U.P.C. case code number (1-1-5-5)
UP	U.P.C. consumer package code (1-5-5-1)
VN	Vendor’s (seller’s) item number
ZZ	Mutually defined

Source: ASC-X12 Data Element 235 - Product/Service ID Qualifier