Code identifying purpose of transaction set.

Code identifiying the type and handling of a Parameter Trace Registration

Code indicating the type of parameter tracing desired

Code indicating the type of output events

Reference number or identification number as defined for a particular Transaction Set, or as specified by the Reference Number Qualifier.

BTC05 is the Trace Identifier.

Code indicating a Yes or No condition or response.

If BTC06 is ``Y'', then waybill information should be included. If ``N'', waybill information will not be included.

Code indicating a Yes or No condition or response.

If BTC07 is ``Y'', then trip information should be included. If ``N'', then trip information will not be included.

Code indicating a Yes or No condition or response.

If BTC08 is ``Y'', then all events from current cycle should be included. If ``N'', the specific number of events will be sent in BTC09.

Occurence counter

Code identifying a party or other code.

BTC10 identifies the network address of a party to receive responses to this set of parameters if other than sender.

Code identifying a pool of equipment assigned to a specific shipper.

Code indicating a code from a specific industry code list

BTC12 is the Car Location Message (CLM) Format.