
Forex: price is not fill
Inspect sampling, quote terms, currency units, and private account events before optimizing a forex adapter.
MARKET TRACK / FOREX
Know what a quote means. Inspect sampled streams, executable terms, currency units, and account-specific order outcomes.
A streaming currency price can be sampled or account-specific. Ask what observations are included and what executable terms apply to the intended quantity. The full guide cites OANDA’s documented account-stream sampling as an example, not as a universal description of every forex interface.
Record base currency, quote currency, order quantity convention, and account reporting currency. Use current instrument increments for validation rather than a hard-coded assumption about decimal precision or pip size. A display convention should not determine the economic meaning of an instruction.
Preserve price observations and private account events independently. Compare actual order behavior, applicable costs, and incomplete attempts rather than selecting an interface only because its visible spread is narrow. Access arrangements and product availability need confirmation with the provider.
Replay a sampled price stream while injecting a delayed private order response. Verify that the system can distinguish missing information from a confirmed rejection. Add stale reporting-currency data and check whether the risk calculation remains eligible under its documented input-freshness policy.
Continue with the complete forex field guide, which includes a primary reference and practical test scenarios. Use the architecture blueprint for the shared system model and the risk checklist for permission and recovery. Confirm actual product terms with the relevant provider before any implementation.
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Inspect sampling, quote terms, currency units, and private account events before optimizing a forex adapter.

Design the complete signal-to-order path with explicit state, data freshness, risk checks, and recovery.

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