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OANDA order rejection and cancel reason

OANDA order rejection and cancel reason: CLIENT_TRADE_ID_ALREADY_EXISTS

The error, as text you can copy

CLIENT_TRADE_ID_ALREADY_EXISTS
Kind
Order rejection and cancel reason
Where you meet it
In a rejection or a cancellation, not in the HTTP status
API
OANDA

What does CLIENT_TRADE_ID_ALREADY_EXISTS mean on the OANDA API?

The client trade ID is already assigned to another open trade. As a cancel reason it means filling the order would have created a trade with a client trade ID already in use. OANDA lists this value as both a transaction reject reason and an order cancel reason.

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 unofficialdeveloper.oanda.comchecked

How do I fix CLIENT_TRADE_ID_ALREADY_EXISTS?

Use an identifier that is not already in use.