Interactive Brokers TWS API message code
Interactive Brokers TWS API message code: 10285 (fractional sizing rules version)
The error, as text you can copy
10285- 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 10285 (fractional sizing rules version) mean on the Interactive Brokers API?
TWS API error 10285 begins "Your API version does not support fractional sizing rules." The words in quotes are Interactive Brokers' own. The message goes on to ask for an upgrade to at least version 163.
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.
How do I fix 10285 (fractional sizing rules version)?
Upgrade the API client to at least version 163, as the message says.