Party Notification Bounced

{
  "metadata": {
    "timestamp": 1769139066,
    "version": "1",
    "topic_description": "This event indicates that the notification bounced.",
    "topic": "transaction.party.notification.status.bounced",
    "id": "0da32564-ada4-4d4b-a1c6-91a131b8fd42"
  },
  "data": {
    "ancillary": {
      "participant_unique_id1": "PARTNER-REF-001",
      "party_id": "4d2102f2-2b31-4b5e-9f6a-d2c52dccf167",
      "notification_id": "1000001",
      "participant_unique_id2": "ABC",
      "session_id": "00000000-0000-0000-0000-000000000001"
    },
    "event": {
      "client_message": "IIP-054-EMAIL: MP_PAYMENT NOTICE",
      "status": "1243"
    }
  }
}