Interactive Brokers TWS API message code
Interactive Brokers TWS API message code: 10304 (minimum competing size)
The error, as text you can copy
10304- Kind
- TWS API message code
- Where you meet it
- In the TWS API, not in the Web API and not in an HTTP status
What does 10304 (minimum competing size) mean on the Interactive Brokers API?
Listed by the vendor as "Minimum Competing Size value must be non-negative". The words in quotes are from Interactive Brokers' own list. The vendor's page adds no notes for this code.
Risk warning: CFDs and spread bets are complex instruments and come with a high risk of losing money rapidly due to leverage. You can lose money on these products, and each provider publishes its own loss figure under FCA rules. You should consider whether you understand how they work and whether you can afford to take the high risk of losing your money. Automated and API trading can amplify losses through bugs, connectivity failures and runaway orders.
No fix in the source
The vendor's page gives no remedy.
That is all the source says, so this page does not invent a fix. General guidance: the other tWS API message codes recorded for Interactive Brokers, and the error lookup for the exact text of the reply you received.