TWS error 201: read the order rejection reason

Quick answer

Error 201 is an order rejection. The reason after the code is the useful part: it can point to permissions, funds, order size, price checks, or another rule. There is no single checkbox that fixes every 201.

Educational software guidance. Trading involves risk. Read the financial and information disclaimers.

Step by step

1 Find the rejected order in the TWS Activity panel and open its status details.
2 Copy the full reason, symbol, order ID, and timestamp. Remove account details before sharing.
3 Match the reason to the needed check: contract permissions, available funds, price, or order attributes.
4 Compare the sent values with your intended order and correct the found cause.
5 Before a retry, check that no other order or fill was created for the same signal.

A practical example

Two orders can both return 201 for very different reasons. One may ask for more funds; another may use a product the account cannot trade. Copy the words after the code. Those words tell you which branch of the guide to use. If you change the wrong setting, the order will still fail and you may have removed a control that you needed.

Illustrative scenario, not a record of a trade placed during this review.

Screen reference

Empty TWS Activity Orders panel and Trades tab — Use Orders to inspect order state and Trades to inspect executions. This empty paper view shows the location; it does not reproduce a rejection or prove a fill. Captured in TWS paper mode on 3 October 2026. Open the image for full size.

How to confirm the result The next planned attempt should address the exact rejection reason. A different rejection needs a fresh diagnosis.

Mistake to avoid

Do not raise limits or remove protections merely because the code is 201.

Common questions

Is every 201 a margin problem?

No. Read the broker’s full reason.

Does PickMyTrade receiving the alert mean IBKR accepted it?

No. Alert receipt and broker acceptance are separate events.

TWS error 200: contract not found or ambiguous TWS error 202: why was the order cancelled? TWS error 110: price does not match the tick size TWS Messages settings and order warnings

Financial and information disclaimers

Financial disclaimer

These guides explain software. They are for education, not financial, investment, tax, or legal advice. No example is a suggestion to buy or sell a product or use a trading strategy. Trading can lose money, including all funds you put at risk. With margin, futures, short sales, or some options, losses can exceed your starting funds. Automation can fail, send duplicate orders, or act late. Stops do not guarantee a fill or a price. Review your orders and positions, and seek advice from a qualified professional for your own needs. Paper trades, examples, and past results do not predict live results or promise a profit.

Information disclaimer

This is general help based on the sources and check date shown on the page. Screens, settings, fees, data access, and product support can change or differ by app version, account, country, and broker. The content may contain errors or become out of date; accuracy, completeness, and continuous service are not guaranteed. Check current broker and app instructions before acting. Screenshots show where controls are; they do not prove that an order test passed. This guide does not replace broker terms or risk notices. References to IBKR and TradingView identify their products and do not imply their endorsement of this guide.