B1 Beginning Segment for Booking or Pick-up/Delivery

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

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Position
Element
Name
Type
Requirement
Min
Max
Repeat
B1-01
Standard Carrier Alpha Code
Identifier (ID)
Optional
2
4
-
Standard Carrier Alpha Code
B101 is the Standard Carrier Alpha Code (SCAC) of the carrier sending the EDI transmission.
B1-02
Shipment Identification Number
String (AN)
Mandatory
1
30
-
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)
B1-03
Date
Date (DT)
Optional
6
6
-
Date (YYMMDD)
B103 is the booking date accepted by the carrier.
B1-04
Reservation Action Code
Identifier (ID)
Optional
1
1
-
Code identifying action on reservation or offering
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