In the Carrier overview within notes its possible to see which Carriers are supporting Early Journey/unassigned containers for B/Ls and Booking Numbers.
Events from an early journey will always be either estimates (EST) or predictions (PRE). All unassigned containers will equipment reference as “UNASSIGNED_CONTAINER_#” Where # is counting from 1.
Event example providing an predicted discharge for an unassigned container:
"events": [
{
"event_id": "edc05509-d0ae-4036-993e-5c241c39eb6e",
"event_created_datetime": "2025-06-04T06:30:35+00:00",
"equipment_reference": "UNASSIGNED_CONTAINER_1",
"bill_of_lading_number": null,
"carrier_booking_reference": "26139239",
"event_classifier_code": "PRE",
"equipment_event_type_code": "DISC",
"event_description": "Predicted discharge",
"event_datetime": "2025-07-17T22:44:00+00:00",
"event_datetime_locale": "2025-07-17T18:44:00-04:00",
"iso_equipment_code": "45GP",
"empty_indicator_code": "LADEN",
"transport_call": {
"transport_call_id": "eccbe870-cbcc-4366-b653-f2b10fd88370",
"carrier_service_code": null,
"carrier_voyage_number": "23W26",
"un_location_code": "CAMTR",
"location": {
"location_name": "MONTREAL",
"country": "CA",
"locode": "CAMTR",
"un_location_code": "CAMTR",
"latitude": "45.5725862741273",
"longitude": "-73.50950060609027",
"timezone": "America/Toronto",
"long": -73.50950060609027,
"lat": 45.5725862741273,
"facility_name": null,
"facility_smdg_code": null,
"facility_bic_code": null
},
"mode_of_transport": "VESSEL",
"transport_call_type": "PORT_OF_DESTINATION",
"vessel": {
"vessel_imo": 9317925,
"vessel_imo_number": 9317925,
"vessel_name": "MSC TAMPA",
"vessel_operator_carrier_code": "HLCU",
"vessel_operator_carrier_code_list_provider": "SCAC"
}
},
"source_type": "GATEHOUSE",
"leg_number": "1/1",
"leg_type": "OCEAN",
"is_dcsa_derived": false,
"event_type": "EQUIPMENT",
"transport_id": "-b44f6d33-63db-4bb5-8aac-7600974b12bc",
"transport_name": null
}