!!! info "[OrderStateFeed](/../../schemas/order_state_feed)"
    |Name<br>`Lite`|Type|Required<br>`Default`| Description |
    |-|-|-|-|
    |order_id<br>`oi` |string|True|A unique 128-bit identifier for the order, deterministically generated within the GRVT backend|
    |client_order_id<br>`co` |string|True|A unique identifier for the active order within a subaccount, specified by the client|
    |order_state<br>`os` |OrderState|True|The order state object being created or updated|
    ??? info "[OrderState](/../../schemas/order_state)"
        |Name<br>`Lite`|Type|Required<br>`Default`| Description |
        |-|-|-|-|
        |status<br>`s` |OrderStatus|True|The status of the order|
        |reject_reason<br>`rr` |OrderRejectReason|True|The reason for rejection or cancellation|
        |book_size<br>`bs` |[string]|True|The number of assets available for orderbook/RFQ matching. Sorted in same order as Order.Legs|
        |traded_size<br>`ts` |[string]|True|The total number of assets traded. Sorted in same order as Order.Legs|
        |update_time<br>`ut` |string|True|Time at which the order was updated by GRVT, expressed in unix nanoseconds|
        |avg_fill_price<br>`af` |[string]|True|The average fill price of the order. Sorted in same order as Order.Legs|
        ??? info "[OrderStatus](/../../schemas/order_status)"
            |Value| Description |
            |-|-|
            |`PENDING` = 1|Order has been sent to the matching engine and is pending a transition to open/filled/rejected.|
            |`OPEN` = 2|Order is actively matching on the matching engine, could be unfilled or partially filled.|
            |`FILLED` = 3|Order is fully filled and hence closed. Taker Orders can transition directly from pending to filled, without going through open.|
            |`REJECTED` = 4|Order is rejected by matching engine since if fails a particular check (See OrderRejectReason). Once an order is open, it cannot be rejected.|
            |`CANCELLED` = 5|Order is cancelled by the user using one of the supported APIs (See OrderRejectReason). Before an order is open, it cannot be cancelled.|
        ??? info "[OrderRejectReason](/../../schemas/order_reject_reason)"
            |Value| Description |
            |-|-|
            |`UNSPECIFIED` = 0|order is not cancelled or rejected|
            |`CLIENT_CANCEL` = 1|client called a Cancel API|
            |`CLIENT_BULK_CANCEL` = 2|client called a Bulk Cancel API|
            |`CLIENT_SESSION_END` = 3|client called a Session Cancel API, or set the WebSocket connection to 'cancelOrdersOnTerminate'|
            |`MARKET_CANCEL` = 4|the market order was cancelled after no/partial fill. Lower precedence than other TimeInForce cancel reasons|
            |`IOC_CANCEL` = 5|the IOC order was cancelled after no/partial fill|
            |`AON_CANCEL` = 6|the AON order was cancelled as it could not be fully matched|
            |`FOK_CANCEL` = 7|the FOK order was cancelled as it could not be fully matched|
            |`EXPIRED` = 8|the order was cancelled as it has expired|
            |`FAIL_POST_ONLY` = 9|the post-only order could not be posted into the orderbook|
            |`FAIL_REDUCE_ONLY` = 10|the reduce-only order would have caused position size to increase|
            |`MM_PROTECTION` = 11|the order was cancelled due to market maker protection trigger|
            |`SELF_TRADE_PROTECTION` = 12|the order was cancelled due to self-trade protection trigger|
            |`SELF_MATCHED_SUBACCOUNT` = 13|the order matched with another order from the same sub account|
            |`OVERLAPPING_CLIENT_ORDER_ID` = 14|an active order on your sub account shares the same clientOrderId|
            |`BELOW_MARGIN` = 15|the order will bring the sub account below initial margin requirement|
            |`LIQUIDATION` = 16|the sub account is liquidated (and all open orders are cancelled by Gravity)|
            |`INSTRUMENT_INVALID` = 17|instrument is invalid or not found on Gravity|
            |`INSTRUMENT_DEACTIVATED` = 18|instrument is no longer tradable on Gravity. (typically due to a market halt, or instrument expiry)|
            |`SYSTEM_FAILOVER` = 19|system failover resulting in loss of order state|
            |`UNAUTHORISED` = 20|the credentials used (userSession/apiKeySession/walletSignature) is not authorised to perform the action|
            |`SESSION_KEY_EXPIRED` = 21|the session key used to sign the order expired|
            |`SUB_ACCOUNT_NOT_FOUND` = 22|the subaccount does not exist|
            |`NO_TRADE_PERMISSION` = 23|the signature used to sign the order has no trade permission|
            |`UNSUPPORTED_TIME_IN_FORCE` = 24|the order payload does not contain a supported TimeInForce value|
            |`MULTI_LEGGED_ORDER` = 25|the order has multiple legs, but multiple legs are not supported by this venue|
            |`EXCEED_MAX_POSITION_SIZE` = 26|the order would have caused the subaccount to exceed the max position size|
            |`EXCEED_MAX_SIGNATURE_EXPIRATION` = 27|the signature supplied is more than 30 days in the future|
            |`MARKET_ORDER_WITH_LIMIT_PRICE` = 28|the market order has a limit price set|
            |`CLIENT_CANCEL_ON_DISCONNECT_TRIGGERED` = 29|client cancel on disconnect triggered|
            |`OCO_COUNTER_PART_TRIGGERED` = 30|the OCO counter part order was triggered|
            |`REDUCE_ONLY_LIMIT` = 31|the remaining order size was cancelled because it exceeded current position size|
            |`CLIENT_REPLACE` = 32|the order was replaced by a client replace request|
            |`DERISK_MUST_BE_IOC` = 33|the derisk order must be an IOC order|
            |`DERISK_MUST_BE_REDUCE_ONLY` = 34|the derisk order must be a reduce-only order|
            |`DERISK_NOT_SUPPORTED` = 35|derisk is not supported|
            |`INVALID_ORDER_TYPE` = 36|the order type is invalid|
            |`CURRENCY_NOT_DEFINED` = 37|the currency is not defined|