Get Event Timestamp

GetEventTimestampRequest

Topic: ocpp/cs. Used by OCPP to request from the CS the timestamp associated with a specific event.
type	object
properties
id	type	string
	format	uuid
name	const	get_event_timestamp
type	const	request
data	type	object
	properties
	event_type	enum	TxEventStart, TxEventStop
	trigger_reason	enum	EVConnected, Authorized, ParkingBayOccupancy, PowerPathClosed, EnergyTransfer, DataSigned

Feature enablement (Device Model)

This request can be enabled/disabled in OCPP service through the Device Model boolean variable EnableGetEventTimestampRequest under component JOSEV_CTRLR.

Example values:

• true: OCPP service is allowed to send get_event_timestamp requests.

• false: OCPP service will not send get_event_timestamp requests.

Used by OCPP to request from the OEM the timestamp associated with a specific event.

Example:

{
    "id": "a504f1cd-2ae0-46cf-a93c-736a28723478",
    "name": "get_event_timestamp",
    "type": "request",
    "data": {
        "event_type": "TxEventStart", # or "TxEventStop"
        "trigger_reason": "EVConnected" # or "Authorized", "ParkingBayOccupancy", "PowerPathClosed", "EnergyTransfer", "DataSigned"
    }
}

GetEventTimestampResponse

Topic: cs/ocpp. Used by the CS to return the timestamp for a previously requested event.
type	object
properties
id	type	string
	format	uuid
name	const	get_event_timestamp
type	const	response
data	type	object
	properties
	timestamp	RFC3339 UTC timestamp. Fractional seconds are optional and limited to a maximum of 3 decimal places. Time zone designator ‘Z’ is required.
		type	string
		pattern	^\d{4}-(0[1-9]|1[0-2])-(0[1-9]|[12]\d|3[01])T([01]\d|2[0-3]):[0-5]\d:[0-5]\d(\.\d{1,3})?Z$
		format	date-time

Used by the OEM to return the timestamp for the requested event.

Example:

{
    "id": "a504f1cd-2ae0-46cf-a93c-736a28723478",
    "name": "get_event_timestamp",
    "type": "response",
    "data": {
        "timestamp": "2026-02-17T10:20:30.123Z"
    }
}

Timestamp format

The response timestamp must be RFC3339 compliant and expressed in UTC using the Z designator. Fractional seconds are optional, and when present must not exceed 3 decimal places.