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MT4 / MT5 Error Codes & Trading Tools
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Official error code lookup
1171 matching records
| Platform / category | Code / constant | Official meaning | Troubleshooting |
|---|---|---|---|
| MT4 · Compiler warnings | 85 | Too great character code in the string, must be in the range 0 to 65535 | 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 | 86 | Unrecognized character in the 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 | 87 | No indicator window property (setting the display in the main window or a subwindow) is defined. Property #property indicator_chart_window is applied | YI GOLD suggestionsVerify symbol, timeframe, indicator handle, BarsCalculated and copied element counts. Wait for data availability rather than filling missing prices with zeros. MetaQuotes |
| MT4 · Compiler warnings | 88 | Property ignored, it must be declared on the global scope. The warning is not generated for the following properties: copyright, link, version and strict. | 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 |
| MT5 · Compilation errors | 100 | File reading error | YI GOLD suggestionsCheck permitted terminal sandbox paths, names, access flags, formats and handles. Record open failures without granting permissive directory access. MetaQuotes |
| MT5 · Compilation errors | 101 | Error of opening an *. EX5 for writing | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 103 | Not enough free memory to complete compilation | YI GOLD suggestionsReduce recursion and large local arrays, review allocation/release, batch history processing and check memory-operation results. MetaQuotes |
| MT5 · Compilation errors | 104 | Empty syntactic unit unrecognized by compiler | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 105 | Incorrect file name in #include | YI GOLD suggestionsCheck permitted terminal sandbox paths, names, access flags, formats and handles. Record open failures without granting permissive directory access. MetaQuotes |
| MT5 · Compilation errors | 106 | Error accessing a file in #include (probably the file does not exist) | YI GOLD suggestionsCheck permitted terminal sandbox paths, names, access flags, formats and handles. Record open failures without granting permissive directory access. MetaQuotes |
| MT5 · Compilation errors | 108 | Inappropriate name for #define | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 109 | Unknown command of preprocessor (valid #include, #define, #property, #import) | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 110 | Symbol unknown to compiler | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 111 | Function not implemented (description is present, but no body) | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 112 | Double quote (") omitted | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 113 | Opening angle bracket (<) or double quote (") omitted | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 114 | Single quote (') omitted | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 115 | Closing angle bracket ">" omitted | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 116 | Type not specified in declaration | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 117 | No return operator or return is found not in all branches of the implementation | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 118 | Opening bracket of call parameters was expected | YI GOLD suggestionsCompare each argument and reference mode with the official signature. Validate ranges and preserve relevant failure context. MetaQuotes |
| MT5 · Compilation errors | 119 | Error writing EX5 | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 120 | Invalid access to an array | YI GOLD suggestionsCheck length, bounds, dynamic-array declarations and ArraySetAsSeries. Validate returned element counts before access. MetaQuotes |
| MT5 · Compilation errors | 121 | The function is not of void type and the return operator must return a value | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 122 | Incorrect declaration of the destructor | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 123 | Colon ":" is missing | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 124 | Variable is already declared | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 125 | Variable with such identifier already declared | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 126 | Variable name is too long (> 250 characters) | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 127 | Structure with such identifier already defined | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 128 | Structure is not defined | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 129 | Structure member with the same name already defined | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 130 | No such structure member | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 131 | Breached pairing of brackets | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 132 | Opening parenthesis "(" expected | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 133 | Unbalanced braces (no "}") | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
| MT5 · Compilation errors | 134 | Difficult to compile (too much branching, internal stack levels are overfilled) | YI GOLD suggestionsReduce recursion and large local arrays, review allocation/release, batch history processing and check memory-operation results. MetaQuotes |
| MT5 · Compilation errors | 135 | Error of file opening for reading | YI GOLD suggestionsCheck permitted terminal sandbox paths, names, access flags, formats and handles. Record open failures without granting permissive directory access. MetaQuotes |
| MT5 · Compilation errors | 136 | Not enough memory to download the source file into memory | YI GOLD suggestionsReduce recursion and large local arrays, review allocation/release, batch history processing and check memory-operation results. MetaQuotes |
| MT5 · Compilation errors | 137 | Variable is expected | YI GOLD suggestionsLocate the first reported line in MetaEditor. Check syntax, types, function signatures, includes and file permissions, then recompile. MetaQuotes |
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