B1 Beginning Segment for Booking or Pick-up/Delivery
To transmit identifying numbers, dates and other basic data relating to the transaction set
Standard Carrier Alpha Code
B101 is the SCAC code of the carrier sending the EDI transmission.
Identification number assigned to the shipment by the shipper that uniquely identifies the shipment from origin to ultimate destination and is not subject to modification. (Does not contain blanks or special characters.)
B103 is the booking date accepted by the carrier.
Code identifying action on reservation or offering.