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Interactive Brokers TWS API message code

Interactive Brokers TWS API message code: 305 (request parsing error)

The error, as text you can copy

305
Kind
TWS API message code
Where you meet it
In the TWS API, not in the Web API and not in an HTTP status
API
Interactive Brokers

What does 305 (request parsing error) mean on the Interactive Brokers API?

Listed by the vendor as "Request parsing error, the request has been ignored". The syntax of a DDE request is invalid. The message says the request has been ignored.

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.

Independent and unofficialinteractivebrokers.github.iochecked

How do I fix 305 (request parsing error)?

Correct the syntax of the DDE request.