Train Cancellation

Overview

A cancellation message is sent when the train does not, or will not, complete its scheduled journey.

A train may be cancelled in one of three ways:

• At activation time ("ON CALL") where the applicable schedule has a STP indicator of "C"
• At the train's planned origin ("AT ORIGIN")
• En-route ("EN ROUTE")
• Off-route ("OUT OF PLAN")

As with all other messages, cancellation messages will only be received for train schedules which have already been activated.

Data structure

Header

Field	Description
msg_type	Set to '0002' for a cancellation message
source_dev_id	Set to the device ID of the terminal that issued the request
source_system_id	Set to "TRUST" for a cancellation message
original_data_source	Set to "TOPS" or "SDR" for a reactionary cancellation, or "" for a planned cancellation (STP 'C')

Body

Field	Description
train_id	The 10-character unique identity for this train at TRUST activation time
orig_loc_stanox	For an an "OUT OF PLAN" cancellation, set to the location in the schedule that the train should have been at
orig_loc_timestamp	For an "OUT OF PLAN" cancellation, the departure time of the location in the schedule that the train should have been at
toc_id	Operating company ID as per [TOC Codes]
dep_timestamp	The departure time at the location that the train is cancelled from
division_code	Operating company ID as per [TOC Codes]
loc_stanox	The STANOX of the location in the schedule that the train is being cancelled from. For an "OUT OF PLAN" cancellation, this STANOX will not be in the schedule, but a [Train Movement] message will have already been sent for
canx_timestamp	The time at which the cancellation was input to TRUST
canx_reason_code	The reason code for the cancellation, taken from the [Delay Attribution Guide]
canx_type	Either "ON CALL" for a planned cancellation, "AT ORIGIN", "EN ROUTE" or "OUT OF PLAN"
train_service_code	Train service code as per schedule
train_file_address	The TOPS train file address, if applicable