MQL4 ERR_TRADE_MODIFY_DENIED
MQL4 error 145 modify denied maps to ERR_TRADE_MODIFY_DENIED: modification denied because order is too close to market. The requested order change conflicts with the current market distance or broker freeze restriction. Capture GetLastError immediately after the failed call, correct the cause, and retry only when the condition can change.
Open the Coding Agent, then choose MQL4 from the language menu.
#property strict
#property script_show_inputs
input int Ticket = 0;
input int StopPoints = 200;
void OnStart()
{
if(Ticket <= 0 || !OrderSelect(Ticket, SELECT_BY_TICKET))
{
Print("OrderSelect failed. error=", GetLastError());
return;
}
RefreshRates();
double stop_loss = NormalizeDouble(Bid - StopPoints * Point, Digits);
if(MathAbs(OrderStopLoss() - stop_loss) < Point / 2.0)
{
Print("No OrderModify call: the stop loss is unchanged.");
return;
}
ResetLastError();
bool changed = OrderModify(OrderTicket(), OrderOpenPrice(), stop_loss,
OrderTakeProfit(), 0, clrNONE);
if(!changed)
Print("OrderModify failed. error=", GetLastError(),
" ticket=", OrderTicket(),
" stop=", DoubleToString(stop_loss, Digits));
}The official MQL4 runtime table names error 145 ERR_TRADE_MODIFY_DENIED and defines it as “modification denied because order is too close to market.” The requested order change conflicts with the current market distance or broker freeze restriction.
The error number is evidence about one failed call, not a diagnosis of the whole EA. Read the API sentinel first, then call GetLastError immediately because that function returns the current _LastError value and resets it.
Start with the inputs and external state that existed at the failure point. A later log entry or a successful call can overwrite the useful context.
Retry only after a fresh quote shows that stop and freeze rules are satisfied. Do not hammer the server while the order remains inside the restricted range.
Keep the original trading and risk rules intact. A workaround that widens stops, increases volume, changes an account setting, or ignores a failed return value can hide the symptom while changing the system.
| Check | Action |
|---|---|
| The new stop or pending price is inside the broker stop distance | Compare the proposed price with the current Bid or Ask and broker distance. |
| The order is inside MODE_FREEZELEVEL and cannot be modified | Read the symbol freeze level and postpone the change when the order is frozen. |
| The quote moved between calculation and OrderModify | Refresh rates and recalculate the price just before OrderModify. |
| The EA changes an order on every tick without checking whether values differ | Skip the call when open price, stop loss, take profit, and expiration are unchanged. |
The script skips an unchanged stop, normalizes the proposed value, and records the ticket and price on failure. Add current stop-level and freeze-level validation for the symbol.
The example improves validation and logging. It does not prove the operation will be accepted by a broker or behave safely in live trading.
#property strict
#property script_show_inputs
input int Ticket = 0;
input int StopPoints = 200;
void OnStart()
{
if(Ticket <= 0 || !OrderSelect(Ticket, SELECT_BY_TICKET))
{
Print("OrderSelect failed. error=", GetLastError());
return;
}
RefreshRates();
double stop_loss = NormalizeDouble(Bid - StopPoints * Point, Digits);
if(MathAbs(OrderStopLoss() - stop_loss) < Point / 2.0)
{
Print("No OrderModify call: the stop loss is unchanged.");
return;
}
ResetLastError();
bool changed = OrderModify(OrderTicket(), OrderOpenPrice(), stop_loss,
OrderTakeProfit(), 0, clrNONE);
if(!changed)
Print("OrderModify failed. error=", GetLastError(),
" ticket=", OrderTicket(),
" stop=", DoubleToString(stop_loss, Digits));
}Pineify can generate or revise one self-contained .mq4 file with MQL4-specific reference context. Its independent static checker returns MetaEditor diagnostics so you can repair source issues before testing in your own MT4 environment.
Open MQL4 Coding AgentStatic diagnostics do not prove runtime behavior, backtest results, broker compatibility, or live-trading safety.
Check the API return value before interpreting an error number from the log.
Call GetLastError immediately and record error 145, symbol, prices, volume, ticket, and terminal state relevant to the operation.
Compare the proposed price with the current Bid or Ask and broker distance.
Compile the revised source, then test with the same MT4 build, broker, symbol, account permissions, and market state.
ERR_TRADE_MODIFY_DENIED means modification denied because order is too close to market. The code should still identify which API returned failure and log the inputs used for that call.
The new stop or pending price is inside the broker stop distance The order is inside MODE_FREEZELEVEL and cannot be modified The quote moved between calculation and OrderModify The EA changes an order on every tick without checking whether values differ
Retry only after a fresh quote shows that stop and freeze rules are satisfied. Do not hammer the server while the order remains inside the restricted range.
It reports the current _LastError value and resets it. Other operations can change the error state, so a delayed read may describe the wrong call.
Pineify can revise a self-contained .mq4 file, add validation and error logging, and return static MetaEditor diagnostics. It cannot prove broker acceptance, account permissions, market availability, or live execution.
Last verified against the linked official references on . Compile and test the final source in the MetaTrader 4 build, broker, symbol, and account environment you plan to use.
Define the requirement, inspect the generated source, repair diagnostics, and test the behavior in your own MT4 environment.
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