Individual Order Events

Event type	When it is sent	Payload
`OmnibusOrderCreated`	After an individual order is saved. If order actions are required, it is sent while the order is still `PendingActions`; otherwise it is sent once the order has been handed to settlement. Orders rejected in the create response do not send it	`OmnibusOrderResponse`
`OmnibusOrderAccepted`	When downstream processing accepts the order for execution. The order status becomes `PendingExecution`	`OmnibusOrderResponse`
`OmnibusOrderRejected`	When an order that was already created is rejected downstream, for example by the transfer agent (`Settlement:TaRejected`). The order status becomes `Rejected` and reason fields are populated when available	`OmnibusOrderResponse`
`OmnibusOrderSent`	When the order has been sent to the transfer agent. The order status becomes `Executed`. Nothing is filled until the transfer agent confirms	`OmnibusOrderResponse`
`OmnibusOrderUpdated`	When an update request is accepted. For orders still in `PendingActions`, the update is applied locally and the webhook is sent immediately. For orders already downstream, the webhook is sent when downstream processing accepts the update	`OmnibusOrderResponse`
`OmnibusOrderUpdateRejected`	When downstream processing rejects an update request that was accepted as `Pending`. Updates refused in the API response do not send it	`UpdateOmnibusOrderResponse`
`OmnibusOrderCancelled`	When a cancellation is accepted and the order status becomes `Cancelled`. Local cancellations for orders still in `PendingActions` send this immediately; downstream cancellations send it only after the cancellation is accepted downstream	`OmnibusOrderResponse`
`OmnibusOrderCancelRejected`	When downstream processing rejects a cancellation request that was accepted as `Pending`. Cancellations refused in the API response do not send it	`CancelOmnibusOrderResponse`
`OmnibusOrderPartiallyFilled`	Retired and never sent. Fills in the netting queue don't send an event of their own; read them with `GET /primary/v1/omnibus/order/{id}`	—
`OmnibusOrderSettled`	When the transfer agent confirms the order. Fills, settled amounts and tax lots are recorded. A gated redemption can settle with a `remainingQuantity`	`OmnibusOrderResponse`
`OmnibusOrderFailed`	When downstream settlement or execution processing fails the order, for example `Settlement:ConfirmationTimeout`. The order status becomes `Failed` and reason fields are populated when available	`OmnibusOrderResponse`

Individual order events are sent to the platform that submitted the order. Orders that are lines of a model order do not send these events; follow the Model Order Events instead and read each line with GET /primary/v1/omnibus/order/{id}.

`OmnibusOrderResponse`

{
  "eventType": "OmnibusOrderSettled",
  "data": {
    "id": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
    "externalId": "string",
    "referenceId": "string",
    "accountId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
    "personId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
    "externalAccountNumber": "string",
    "financialInstitutionId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
    "financialAdvisorId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
    "side": "Buy",
    "omnibusFundId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
    "omnibusShareClassId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
    "quantity": null,
    "notionalAmount": 10000.00,
    "effectiveNotionalAmount": 10000.00,
    "feeAmount": 0,
    "feeId": null,
    "currency": "USD",
    "distributionElection": "Cash",
    "taxLotElection": "FIFO",
    "requestedRouteInstruction": "DirectToTa",
    "routeInstruction": "DirectToTa",
    "modelId": null,
    "modelOrderId": null,
    "submittedAtUtc": "2026-07-14T15:18:57.691Z",
    "acceptedAtUtc": "2026-07-14T15:18:59.102Z",
    "status": "Settled",
    "statusReasonCode": null,
    "rejectedStatusReasonMessage": null,
    "filledQuantity": 400,
    "filledNotionalAmount": 10000.00,
    "remainingQuantity": 0,
    "remainingNotionalAmount": 0,
    "settledQuantity": 400,
    "settledNotionalAmount": 10000.00,
    "fills": [
      {
        "fillId": "string",
        "filledQuantity": 400,
        "filledNotionalAmount": 10000.00,
        "executionPrice": 25.00,
        "tradeDate": "2026-07-31",
        "source": "SettlementService",
        "status": "Settled"
      }
    ],
    "settlementItems": [
      {
        "settlementItemId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
        "quantity": 400,
        "notionalAmount": 10000.00,
        "status": "Settled",
        "reasonCode": null
      }
    ],
    "events": []
  }
}

personId is the account's primary owner
effectiveNotionalAmount is the amount invested after any order fee (feeAmount). remainingNotionalAmount starts from it
requestedRouteInstruction is what you sent; routeInstruction is how Monark routed the order. An order sent without a route goes to the transfer agent (TransferAgent)
events is reserved and currently always empty

`UpdateOmnibusOrderResponse` (Rejected)

{
  "eventType": "OmnibusOrderUpdateRejected",
  "data": {
    "updateRequestId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
    "orderId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
    "status": "Rejected",
    "reasonCode": "string",
    "message": "string",
    "createdAtUtc": "2026-07-14T15:18:57.691Z"
  }
}

`CancelOmnibusOrderResponse` (Rejected)

{
  "eventType": "OmnibusOrderCancelRejected",
  "data": {
    "cancelRequestId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
    "orderId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
    "status": "Rejected",
    "reasonCode": "string",
    "message": "string",
    "createdAtUtc": "2026-07-14T15:18:57.691Z",
    "updatedAtUtc": "2026-07-14T15:18:57.691Z"
  }
}

Notes:

You may receive OmnibusOrderCreated before the order has been accepted downstream.
A cancellation API response with status Pending does not mean the order is cancelled. You receive OmnibusOrderCancelled only when the cancellation is accepted.
Individual orders linked to a model order are not cancelled through the individual order endpoint. Use the model order cancellation flow.
Update and cancel rejection webhooks carry the request response object, not the full order response object.

OmnibusOrderResponse

UpdateOmnibusOrderResponse (Rejected)

CancelOmnibusOrderResponse (Rejected)

`OmnibusOrderResponse`

`UpdateOmnibusOrderResponse` (Rejected)

`CancelOmnibusOrderResponse` (Rejected)