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Interactive Brokers TWS API message code

Interactive Brokers TWS API message code: 336 (invalid time or time zone)

The error, as text you can copy

336
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 336 (invalid time or time zone) mean on the Interactive Brokers API?

Interactive Brokers lists TWS API error code 336 with a text that begins "The time or time zone is invalid." (the vendor's wording). The vendor's page adds no notes for this code.

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 336 (invalid time or time zone)?

The message gives the expected format, hh:mm:ss followed by an optional time zone, with a space between them. The vendor's page adds no further remedy.