Event Objects
The event object that is passed in to the event handler methods has multiple fields.
The Event Object Fields
Event Object Fields describes the event object fields.
| Field | Description | Before Send to Gateway | Response from Gateway |
|---|---|---|---|
| operation | The operation being performed by the payment gateway. | Yes | Yes |
| eventType | The event type. This corresponds to the Event Handler method being invoked. | Yes | Yes |
| engineRequest | The request message received from the Engine. | Yes | Yes |
| engineResponse | The response message to be sent to the Engine. | No | Yes |
| merchantAccount | The merchant account that has been selected for this request. | Yes | Yes |
The following sections describe additional vendor-specific fields that can extend the base event object.