View and email bills of lading, weight and inspection certificates, and delivery receipts. A bill of lading is a legally binding document issued by a carrier to a shipper that details the type, quantity, and destination of the goods being carried. Pro numbers are 9 or 10 (with a check digit) numbers. This draft standard for trial use contains the format and establishes the data contents of the motor carrier bill of lading transaction set (211) for use within the context of an electronic data interchange (edi) environment. Abbreviations for package types, handling units.