There is no guarantee that an OKX market order will always be fully filled for the desired quantity. It may be rejected or partially filled depending on price limits, slippage protection, order quantity limits, liquidity, and account conditions. Before placing the order again, you must first check the filled quantity, remaining quantity, cancellation reason, and current balance or position to avoid duplicate orders.
This article provides informational guidance for users in Korea and globally on interpreting order statuses. It does not guarantee that OKX or derivatives are available in any particular country. The actual place of residence, contracting entity, and regulations applicable to the product and account are more important than the language used to access the service. Last reviewed: 2026-09-21.
First, distinguish between order cancellation and trade cancellation
Do not assume that no trade occurred simply because the screen shows “Canceled.” The order may have been partially filled and only the remainder canceled. The filled portion may already be reflected in your balance or position, so you must review the order status together with the actual execution history.
| Status checked | Key point to interpret | Next check |
|---|---|---|
| Rejected or order submission failed | The order may not have been accepted due to input or account conditions | Whether an order ID was generated, the error reason, and any separate execution history |
| Canceled, filled quantity 0 | No fill occurred for the order, and the remainder was canceled | Distinguish executions and balance changes from other orders |
| Canceled, filled quantity greater than 0 | The remaining quantity may have been canceled after a partial fill | Cumulative filled quantity, average price, and fees |
| Open or Partially filled | The remaining order may still be active | The unfilled orders list and the final result of the cancellation request |
| Filled | The order has been fully executed | Final quantity, average price, and trading costs |
Status names may vary slightly across the app, website, and API. CoinPop recommends the following verification order: order ID → cumulative filled quantity → remaining active order → balance and position. This makes it easier to distinguish the cause of an error than placing another order for the same quantity based on only one item.
Do not treat price limits and slippage protection as the same rule
OKX price limits are a risk control that defines the permitted order price range for each product. The range may change depending on market conditions. Separately, there is an explanation of price protection that prevents spot and margin orders whose expected execution price deviates significantly from the order book. You cannot assume that the two mechanisms use the same criteria or operate at the same stage.
The OKX U.S. price limit document explains that under spot and margin price protection, an order is canceled in full if its expected execution price is higher than 1.05 times the best ask or lower than 0.95 times the best bid. This must not be generalized as a fixed 5% rule applicable to all countries and all futures products. The document itself also states that the parameters may be adjusted.
In contrast, the June 29, 2026 notice on spot market-order execution in Europe describes a change under which, for spot orders exceeding the product price limit, the quantity within the permitted range is filled first and the remaining quantity outside the range is canceled. This notice alone does not establish that the separate slippage protection described above has been removed.
| Category | Criteria to examine | Incorrect generalization |
|---|---|---|
| Product price limits | The current upper and lower limits for the relevant trading pair and the products to which they apply | All orders are subject to the same percentage limit |
| Expected execution price protection | The order book, expected execution price, and protection rules applicable to the account | Any order is possible as long as the final average price is acceptable |
| User order conditions | Settings such as Limit, IOC, FOK, and Post Only | All cancellations are caused by an exchange outage |
| Account and quantity limits | Available balance, order increment, minimum and maximum quantities, and product permissions | Changing only the price will always solve the problem |
Calculation example: What happens if you place the full order again after a partial fill?
The following figures are CoinPop’s educational assumptions, not actual OKX prices or current protection limits. Assume that the purchase target is 1 BTC, that 0.4 BTC is filled at 100,000 USDT and 0.3 BTC at 100,200 USDT within the permitted range, and that the remaining 0.3 BTC is canceled.
| Category | Quantity | Execution price | Trade amount |
|---|---|---|---|
| First fill | 0.4 BTC | 100,000 USDT | 40,000 USDT |
| Next fill | 0.3 BTC | 100,200 USDT | 30,060 USDT |
| Total | 0.7 BTC | Average approximately 100,085.71 USDT | 70,060 USDT |
| Canceled after remaining quantity was unfilled | 0.3 BTC | No execution | Not included in the execution amount |
The weighted-average execution price is 70,060 ÷ 0.7 ≈ 100,085.71 USDT. If the comparison reference price at the time of the order was set at 100,000 USDT, the average purchase slippage is approximately 0.0857%. Even if the average appears small, the remaining quantity at higher price levels may have been outside the protection range, so the reason for cancellation cannot be inferred from this average alone.
If you mistakenly interpret the order as failed after already buying 0.7 BTC and place another order for 1 BTC that is fully filled, your total purchase will be 1.7 BTC. Assuming you intend to maintain a target of 1 BTC, 0.3 BTC remained unfilled, but you should decide whether to place another order only after rechecking the current price, exposure, and active orders. This is not a recommendation to automatically repurchase the remaining quantity.
Slippage is not eliminated by a fee discount
Applying the educational assumption of a 0.10% fee rate to the 70,060 USDT execution amount above results in a trading fee of 70.06 USDT. Assuming the fee is paid separately in USDT, the total expenditure is 70,130.06 USDT. The 60 USDT difference in execution price compared with the 70,000 USDT required to purchase 0.7 BTC at the reference price is separate from the trading fee.
The 0.10% figure is used for the calculations in this article and is not a confirmed OKX rate. Actual fees must be checked based on the account, trading pair, tier, execution method, and fee currency. Before comparing only discount rates, also review the OKX spot and futures Maker/Taker fee calculation and verification method.
If you use futures, do not combine trading fees, slippage, funding fees, and liquidation losses into a single figure. Each has different conditions for occurrence. In particular, costs settled periodically while holding a position are explained separately in the Bitcoin funding fee calculation and payment time guide.
Unfilled-order handling may also differ between spot and futures
The OKX basic order types document distinguishes between the immediate cancellation of the quantity that cannot be filled within the price limit for spot and margin market orders and cases in which unfilled orders for expiry and perpetual futures market orders may remain open. Therefore, do not assume that futures will behave exactly like the cancellation behavior you experienced in spot.
In particular, users who intended to close a futures position must check, in addition to the order status, whether the position quantity has actually decreased. A screen showing successful order submission does not mean that liquidation risk has disappeared. Conversely, some fills may occur while a cancellation is being processed even after you press the cancel button, so distinguish the cancellation request from final cancellation completion.
Could it have been canceled because of IOC, FOK, or Post Only?
You may remember placing a market order, but the actual order type may have been different. According to the basic order types document, IOC cancels any quantity that is not filled immediately, while FOK cancels the entire order if immediate full execution is impossible. Post Only is a condition for remaining on the order book as a Maker, so it may cancel an order that would execute immediately. A Limit order does not guarantee Maker status merely because it is a Limit order.
The fact that a quantity was visible in the order book does not by itself guarantee execution of an FOK order. Quotes may change between the time you check and the time the order is actually accepted, and the visible price levels may differ from the permitted order range. Trying to solve the issue by unconditionally disabling protection options or increasing the market-order quantity may increase price risk.
Verification sequence before placing another order
- Account and product: Confirm whether it is spot, margin, perpetual, or expiry futures, and whether the trading pair and settlement currency are correct.
- Order ID and time: Find the same order and record the time zone as well. Do not confuse the order history with the execution history.
- Execution and remaining quantity: Check the cumulative executed quantity, average execution price, fees, and remaining active quantity.
- Reason for cancellation or rejection: Classify whether it was due to price protection, quantity limits, insufficient balance, permissions, or order conditions.
- Balance and positions: Check how much spot assets or futures exposure has actually changed.
- Current order book: Check the spread and the depth available for the desired quantity, but do not treat a momentary display as a guarantee of execution.
- Decision to place another order: Recalculate the remaining target and risk tolerance. If the situation is unclear, do not repeatedly resubmit the order; contact official support.
API users should not determine that an order has failed solely because of a network response timeout. If the submission result is unclear, first use your own implementation procedure for checking the status with the order ID or client order identifier. This article does not provide automated trading code or tools for executing new orders.
Information that is useful to provide to official support and information that must not be sent
In your inquiry, organize the trading pair, product, order type, order ID, time of occurrence and time zone, error message, cumulative executed quantity, and remaining quantity. Screenshots with only the necessary portions redacted can also help distinguish the cause. On public forums, minimize personal account identifiers, and do not share passwords, OTPs, API secret keys, or recovery phrases.
This material alone cannot establish whether the cause was an exchange outage or user error. You must check the official status notices together with the individual order records. It is also important not to describe an unfavorable execution by itself as hacking or market manipulation.
Points for users in Korea and globally to note in common
The language or regional URL indication in official help materials provides context, but cannot by itself establish the legal scope of services available to your account. Check the contracting entity, terms of use, product screen, and support response for the logged-in account together. Methods for bypassing regional restrictions or registering under another person's identity are outside the scope of this guide.
Execution protection for orders is not a system that guarantees an exchange's solvency, the return of assets, or prevention of account takeover. Even if reserve information is available, it does not prove the proper processing of a specific order or compensation for losses. Leverage can magnify losses even from price movements while an order remains unfilled.
Frequently asked questions
Why was my market order not executed in full immediately?
Because the available quoted quantity and price range, maximum quantity, and account conditions must all be satisfied together. A market order is not a contract guaranteeing the desired price or full execution.
Are there fees for canceled orders?
Distinguish between the portion that was never executed and the portion that was already executed. If there was a partial execution, fee details for that transaction may exist. You must confirm this through the final execution details and the rate applied to the account.
Can 1.05x and 0.95x be applied to all OKX products?
No. Do not extend the explanations in the spot and margin price protection documents cited in this article into fixed rules for futures, options, or accounts in every region. You must verify the actual applicable conditions and the possibility of changes.
Can I immediately resubmit the remaining quantity after a partial execution?
You must first confirm that the existing remainder was actually canceled. Repeatedly submitting orders without checking other active orders or positions may create greater exposure than intended.
Will switching to a limit order solve the problem?
It can clarify the desired price condition, but does not guarantee execution. If the cause is a price limit, quantity, or account condition, changing only the order type may not resolve it.
CoinPop's judgment and review criteria
The most important thing is distinguishing between executions that have already occurred and risks that still remain, rather than “how to force execution at all costs.” Beginners should start by checking the order status and executed quantity; large-order users should start with order book depth and the expected price difference; and futures users should start by checking their remaining positions. This is not a recommendation to trade or a guarantee of profits.
CoinPop has partnerships with certain exchanges, and related documents on the site may contain affiliate links. This article does not include a direct sign-up referral CTA, and official source links have not been replaced with referral links. The tables and calculations are the site's own assumptions for explaining concepts and do not represent actual trading performance or results retrieved from a user's account.
The official sources are the price limit rules, the notice on changes to spot market-order execution, and the basic order type documentation referenced in the main text. The content may change after the review date. Explanations for different products and regions have not been combined into a single definitive worldwide rule, and the final reason for your order must be confirmed through the relevant order record and the response from the applicable entity.
