To indicate the start of a transaction set and to assign a control number

To transmit basic data relating to car scheduling information

To transmit identifying information as specified by the Reference Identification Qualifier

To identify the service commitment schedules

To identify the waybill and to specify the equipment used and the destination details

To transmit scheduled events such as arrivals, departures, and interchange times

To identify the rail origin of the shipment

To identify the rail destination of the shipment

To identify a party by type of organization, name, and code

To specify carrier and routing sequences and details

To specify the line item in terms of description, quantity, packaging, and marks and numbers

To specify special handling instructions in coded or free-form format

To identify the car service directive or other car movement instructions applicable to the empty movement of the car

To specify the chassis equipment details in terms of identifying numbers, weights, and ownership

To identify the transportation interchange authority

To specify mechanical protective service and ventilation instructions

To specify identifying information

To identify additional station and waybill or station, or waybill information pertaining to revenue waybill

To identify a person or office to whom administrative communications should be directed

To indicate the end of the transaction set and provide the count of the transmitted segments (including the beginning (ST) and ending (SE) segments)