Change of Origin

Overview

When a train is due to start from a location other than the first location in the schedule, a change of origin message will be sent.

Trains may start from an alternative location for two reasons:

• When the previous working is terminated short of its destination and the return working will start from that location
• When the train starts from, for example, Doncaster North Yard rather than the schedule location of Doncaster South Yard

Data structure

{
    "header": {
        "msg_type": "0006",
        "source_dev_id": "V3HS",
        "user_id": "#QRP0059",
        "original_data_source": "SDR",
        "msg_queue_timestamp": "1511528282000",
        "source_system_id": "TRUST"
    },
    "body": {
        "reason_code": "TH",
        "current_train_id": "",
        "original_loc_timestamp": "",
        "train_file_address": null,
        "train_service_code": "21734000",
        "toc_id": "20",
        "dep_timestamp": "1511540100000",
        "coo_timestamp": "1511528280000",
        "division_code": "20",
        "loc_stanox": "16416",
        "train_id": "321P42MP24",
        "original_loc_stanox": ""
    }
}

Header

Field	Description
msg_type	Set to '0006' for an change of origin message
source_dev_id	LATA or CICS Session of the inputting terminal
user_id	NCI signon of the inputting user
source_system_id	Set to "TRUST" for a change of origin message
original_data_source	Set to "TRUST DA" or "SDR" for a change of origin message
msg_queue_timestamp

Body

Field	Description
train_id	The 10-character unique identity for this train at TRUST activation time
dep_timestamp	The planned departure time at the location where the train is being reinstated
loc_stanox	The STANOX of the new origin of the train
original_loc_stanox	If the location has been revised, e.g. the new origin is 'out of plan' for the train, the STANOX of location in the schedule at activation
original_loc_timestamp	The planned departure time associated with the original location
current_train_id	Always blank
train_service_code	Train service code as per schedule
reason_code	The reason code for the cancellation, taken from the Delay Attribution Guide
division_code	Operating company ID as per TOC Codes
toc_id	Operating company ID as per TOC Codes
train_file_address	The TOPS train file address, if applicable
coo_timestamp	The time at which the Change of Origin is entered into TRUST