B1 Beginning Segment for Booking or Pick-up/Delivery

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

Position: B1-01 · Element: 143 · Name: Transaction Set Identifier Code · Type: Identifier (ID) · Requirement: Optional · Min: 3 · Max: 3 · Repeat: -

Code uniquely identifying a Transaction Set.

Due to the installation of the "ST" segment in all transaction sets, data element 143 in all of the "B" segments is redundant. DE143 will be retained as an optional data element for a period of adjustment. It is suggested that DE143 not be transmitted so it may be dropped from segment definitions in the future.

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

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: 239 · Name: Booking Date · Type: Date (DT) · Requirement: Conditional · Min: 6 · Max: 6 · Repeat: -

Date booking for ocean voyage was accepted by the carrier.

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

Code identifying action on reservation or offering.