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MT4 / MT5 Error Codes & Trading Tools
Search official trade, runtime and compilation codes and warnings. Calculate risk using actual contract specifications.
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Official error code lookup
1171 matching records
| Platform / category | Code / constant | Official meaning | Troubleshooting |
|---|---|---|---|
| MT4 · Trade return codes | 65 ERR_INVALID_ACCOUNT | Invalid account | YI GOLD suggestionsCheck permissions, sessions, symbol specifications, quotes and request parameters. Reproduce in a demo account. Do not retry rejected requests indefinitely. MetaQuotes |
| MT4 · Trade return codes | 128 ERR_TRADE_TIMEOUT | Trade timeout | YI GOLD suggestionsInspect connectivity, logs and request time. Verify actual order status before bounded retries with backoff to avoid duplicate exposure after a timeout. MetaQuotes |
| MT4 · Trade return codes | 129 ERR_INVALID_PRICE | Invalid price | YI GOLD suggestionsRead the latest bid/ask and quote time. Check precision and allowed deviation; stop increasing exposure with stale quotes. MetaQuotes |
| MT4 · Trade return codes | 130 ERR_INVALID_STOPS | Invalid stops | YI GOLD suggestionsCheck bid/ask, point, digits, stops_level and freeze_level. Recalculate distances; do not remove protection merely to force a fill. MetaQuotes |
| MT4 · Trade return codes | 131 ERR_INVALID_TRADE_VOLUME | Invalid trade volume | YI GOLD suggestionsRead volume_min, volume_max, volume_step and volume_limit for the actual symbol. Round down to the step; do not send an order below minimum volume. MetaQuotes |
| MT4 · Trade return codes | 132 ERR_MARKET_CLOSED | Market is closed | YI GOLD suggestionsCheck server time, gold trading sessions, holidays and terminal/EA permissions. Wait for availability instead of repeatedly retrying closed-market requests. MetaQuotes |
| MT4 · Trade return codes | 133 ERR_TRADE_DISABLED | Trade is disabled | YI GOLD suggestionsCheck server time, gold trading sessions, holidays and terminal/EA permissions. Wait for availability instead of repeatedly retrying closed-market requests. MetaQuotes |
| MT4 · Trade return codes | 134 ERR_NOT_ENOUGH_MONEY | Not enough money | YI GOLD suggestionsCheck actual account denomination, free margin, volume and leverage. Calculate margin in the terminal and assess reduced exposure or genuine funding. Do not repeatedly submit the same request. MetaQuotes |
| MT4 · Trade return codes | 135 ERR_PRICE_CHANGED | Price changed | YI GOLD suggestionsRead the latest bid/ask and quote time. Check precision and allowed deviation; stop increasing exposure with stale quotes. MetaQuotes |
| MT4 · Trade return codes | 136 ERR_OFF_QUOTES | Off quotes | YI GOLD suggestionsRead the latest bid/ask and quote time. Check precision and allowed deviation; stop increasing exposure with stale quotes. MetaQuotes |
| MT4 · Trade return codes | 137 ERR_BROKER_BUSY | Broker is busy | YI GOLD suggestionsSerialize account requests, verify previous outcomes, reduce frequency and use bounded backoff. MetaQuotes |
| MT4 · Trade return codes | 138 ERR_REQUOTE | Requote | YI GOLD suggestionsRead the latest bid/ask and quote time. Check precision and allowed deviation; stop increasing exposure with stale quotes. MetaQuotes |
| MT4 · Trade return codes | 139 ERR_ORDER_LOCKED | Order is locked | YI GOLD suggestionsSerialize account requests, verify previous outcomes, reduce frequency and use bounded backoff. MetaQuotes |
| MT4 · Trade return codes | 140 ERR_LONG_POSITIONS_ONLY_ALLOWED | Buy orders only allowed | YI GOLD suggestionsCheck permissions, sessions, symbol specifications, quotes and request parameters. Reproduce in a demo account. Do not retry rejected requests indefinitely. MetaQuotes |
| MT4 · Trade return codes | 141 ERR_TOO_MANY_REQUESTS | Too many requests | YI GOLD suggestionsSerialize account requests, verify previous outcomes, reduce frequency and use bounded backoff. MetaQuotes |
| MT4 · Trade return codes | 145 ERR_TRADE_MODIFY_DENIED | Modification denied because order is too close to market | YI GOLD suggestionsCheck permissions, sessions, symbol specifications, quotes and request parameters. Reproduce in a demo account. Do not retry rejected requests indefinitely. MetaQuotes |
| MT4 · Trade return codes | 146 ERR_TRADE_CONTEXT_BUSY | Trade context is busy | YI GOLD suggestionsSerialize account requests, verify previous outcomes, reduce frequency and use bounded backoff. MetaQuotes |
| MT4 · Trade return codes | 147 ERR_TRADE_EXPIRATION_DENIED | Expirations are denied by broker | YI GOLD suggestionsCheck permissions, sessions, symbol specifications, quotes and request parameters. Reproduce in a demo account. Do not retry rejected requests indefinitely. MetaQuotes |
| MT4 · Trade return codes | 148 ERR_TRADE_TOO_MANY_ORDERS | The amount of open and pending orders has reached the limit set by the broker | YI GOLD suggestionsCheck permissions, sessions, symbol specifications, quotes and request parameters. Reproduce in a demo account. Do not retry rejected requests indefinitely. MetaQuotes |
| MT4 · Trade return codes | 149 ERR_TRADE_HEDGE_PROHIBITED | An attempt to open an order opposite to the existing one when hedging is disabled | YI GOLD suggestionsCheck permissions, sessions, symbol specifications, quotes and request parameters. Reproduce in a demo account. Do not retry rejected requests indefinitely. MetaQuotes |
| MT4 · Trade return codes | 150 ERR_TRADE_PROHIBITED_BY_FIFO | An attempt to close an order contravening the FIFO rule | YI GOLD suggestionsCheck permissions, sessions, symbol specifications, quotes and request parameters. Reproduce in a demo account. Do not retry rejected requests indefinitely. MetaQuotes |
| MT4 · Compiler warnings | 21 | Incomplete record of a date in the datetime string | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
| MT4 · Compiler warnings | 22 | Wrong number in the datetime string for the date. Requirements: Year 1970 <= X <= 3000 Month 0 <X <= 12 Day 0 <X <= 31/30/28 (29 ).... | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
| MT4 · Compiler warnings | 23 | Wrong number of datetime string for time. Requirements: Hour 0 <= X <24 Minute 0 <= X <60 | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
| MT4 · Compiler warnings | 24 | Invalid color in RGB format: one of RGB components is less than 0 or greater than 255 | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
| MT4 · Compiler warnings | 25 | Unknown character of the escape sequences. Known: \n \r \t \\ \" \' \X \x | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
| MT4 · Compiler warnings | 26 | Too large volume of local variables (> 512Kb) of the function, reduce the number | YI GOLD suggestionsRead volume_min, volume_max, volume_step and volume_limit for the actual symbol. Round down to the step; do not send an order below minimum volume. MetaQuotes |
| MT4 · Compiler warnings | 29 | Enumeration already defined (duplication) - members will be added to the first definition | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
| MT4 · Compiler warnings | 30 | Overriding macro | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
| MT4 · Compiler warnings | 31 | The variable is declared but is not used anywhere | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
| MT4 · Compiler warnings | 32 | Constructor must be of void type | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
| MT4 · Compiler warnings | 33 | Destructor must be of void type | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
| MT4 · Compiler warnings | 34 | Constant does not fit in the range of integers (X> _UI64_MAX | | X <_I64_MIN) and will be converted to the double type | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
| MT4 · Compiler warnings | 35 | Too long HEX - more than 16 significant characters (senior nibbles are cut) | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
| MT4 · Compiler warnings | 36 | No nibbles in HEX string "0x" | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
| MT4 · Compiler warnings | 37 | No function - nothing to be performed | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
| MT4 · Compiler warnings | 38 | A non-initialized variable is used | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
| MT4 · Compiler warnings | 41 | Function has no body, and is not called | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
| MT4 · Compiler warnings | 43 | Possible loss of data at typecasting. Example: int x = (double) z; | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
| MT4 · Compiler warnings | 44 | Loss of accuracy (of data) when converting a constant. Example: int x = M_PI | YI GOLD suggestionsReview the warning line, types, initialization and return values in MetaEditor. Evaluate runtime consequences and correct the warning even when compilation succeeds. MetaQuotes |
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