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Interactive Brokers TWS API message code

Interactive Brokers TWS API message code: 307 (invalid request topic)

The error, as text you can copy

307
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 307 (invalid request topic) mean on the Interactive Brokers API?

Listed by the vendor as "Invalid request topic:". The topic field in a DDE request is invalid.

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 307 (invalid request topic)?

Correct the topic field of the DDE request.