B1 Beginning Segment for Booking or Pickup/Delivery

To transmit identifying numbers, dates, and other basic data relating to the transaction set

Position: B1-01 · Element: 140 · Name: Standard Carrier Alpha Code · Type: Identifier (ID) · Requirement: Mandatory · Min: 2 · Max: 4 · Repeat: 1

Standard Carrier Alpha Code

B101 is the Standard Carrier Alpha Code (SCAC) of either the carrier receiving the booking request or the carrier sending the booking confirmation.

Position: B1-02 · Element: 145 · Name: Shipment Identification Number · Type: String (AN) · Requirement: Optional · Min: 1 · Max: 30 · Repeat: 1

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)

Position: B1-03 · Element: 373 · Name: Date · Type: Date (DT) · Requirement: Optional · Min: 8 · Max: 8 · Repeat: 1

Date expressed as CCYYMMDD where CC represents the first two digits of the calendar year

B103 is either the date of the booking request or the date the booking was accepted by the carrier.

Position: B1-04 · Element: 558 · Name: Reservation Action Code · Type: Identifier (ID) · Requirement: Optional · Min: 1 · Max: 1 · Repeat: 1

Code identifying action on reservation or offering

Position: B1-05 · Element: 1073 · Name: Yes/No Condition or Response Code · Type: Identifier (ID) · Requirement: Optional · Min: 1 · Max: 1 · Repeat: 1

Code indicating a Yes or No condition or response

If B105 is "Y", partial loadings are allowed. If B105 is "N", partial loadings are not allowed.

Position: B1-06 · Element: 1658 · Name: Shipment or Work Assignment Decline Reason Code · Type: Identifier (ID) · Requirement: Optional · Min: 3 · Max: 3 · Repeat: 1

Code indicating the reason for declining a shipment or work assignment

B106 should be sent if the B104 action code is a "D" for decline.