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Interactive Brokers TWS API message code

Interactive Brokers TWS API message code: 419 (scale initial size missing)

The error, as text you can copy

419
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 419 (scale initial size missing) mean on the Interactive Brokers API?

Listed by the vendor as "Missing initial component size for scale order". The scale order has no initial component size.

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 419 (scale initial size missing)?

Specify ScaleInitLevelSize.