How should automation normalize prices to cTrader tick size and digits?

What this means in practice

Normalize executable prices to the symbol's valid precision and tick increment. cTrader exposes Digits and TickSize; generic decimal rounding is not a safe cross-market rule. This page is specifically about “How should automation normalize prices to cTrader tick size and digits?”, so each scenario below is explained by its own mechanism instead of sharing one generic diagnosis.

Real-world scenarios

Scenario A — 5-digit FX

Validate protection in the symbol's real units: direction, price-versus-distance convention, tick size/digits and current minimum distance. Record the normalized value actually sent to cTrader. For Scenario A — 5-digit FX on question 88, use that evidence specifically to answer “How should automation normalize prices to cTrader tick size and digits?”; keep it separate from the evidence for the other scenarios on this page.

Scenario B — Gold tick

Validate protection in the symbol's real units: direction, price-versus-distance convention, tick size/digits and current minimum distance. Record the normalized value actually sent to cTrader. For Scenario B — Gold tick on question 88, use that evidence specifically to answer “How should automation normalize prices to cTrader tick size and digits?”; keep it separate from the evidence for the other scenarios on this page.

Scenario C — Index precision

Inspect the mechanism named by “Scenario C — Index precision” directly. Record its input, the state immediately before it and the first observable output that differs from the intended result. For Scenario C — Index precision on question 88, use that evidence specifically to answer “How should automation normalize prices to cTrader tick size and digits?”; keep it separate from the evidence for the other scenarios on this page.

What to check

• target connector/account identity
• exact broker symbol
• normalized order parameters
• cTrader response and final position/order state

Practical rule

For “How should automation normalize prices to cTrader tick size and digits?”, change only the first layer whose evidence no longer matches the intended action. Preserve signal identity, timestamps and final cTrader state, and reproduce execution-affecting changes on demo before live use.