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Interactive Brokers API error code

Interactive Brokers API error: Failed to parse body as JSON

The error, as text you can copy

Failed to parse body as JSON
Kind
API error code
HTTP status
400
API
Interactive Brokers

What does Failed to parse body as JSON mean on the Interactive Brokers API?

Web API status 400 BadRequest, with an error message that begins "Failed to parse body as JSON" (the vendor's wording). Interactive Brokers lists it on its order error details page. The vendor's context: the request body is not properly formatted as JSON.

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.comchecked

How do I fix Failed to parse body as JSON?

Send a body that is valid JSON. The page gives no other remedy.