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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 |
|---|---|---|---|
| MT5 · Runtime errors | 5050 ERR_INCOMPATIBLE_ARRAYS | Copying incompatible arrays. String array can be copied only to a string array, and a numeric array - in numeric array only | YI GOLD suggestionsCheck length, bounds, dynamic-array declarations and ArraySetAsSeries. Validate returned element counts before access. MetaQuotes |
| MT5 · Runtime errors | 5051 ERR_SMALL_ASSERIES_ARRAY | The receiving array is declared as AS_SERIES, and it is of insufficient size | YI GOLD suggestionsCheck length, bounds, dynamic-array declarations and ArraySetAsSeries. Validate returned element counts before access. MetaQuotes |
| MT5 · Runtime errors | 5052 ERR_SMALL_ARRAY | Too small array, the starting position is outside the array | YI GOLD suggestionsCheck length, bounds, dynamic-array declarations and ArraySetAsSeries. Validate returned element counts before access. MetaQuotes |
| MT5 · Runtime errors | 5053 ERR_ZEROSIZE_ARRAY | An array of zero length | YI GOLD suggestionsCheck length, bounds, dynamic-array declarations and ArraySetAsSeries. Validate returned element counts before access. MetaQuotes |
| MT5 · Runtime errors | 5054 ERR_NUMBER_ARRAYS_ONLY | Must be a numeric array | YI GOLD suggestionsCheck length, bounds, dynamic-array declarations and ArraySetAsSeries. Validate returned element counts before access. MetaQuotes |
| MT5 · Runtime errors | 5055 ERR_ONEDIM_ARRAYS_ONLY | Must be a one-dimensional array | YI GOLD suggestionsCheck length, bounds, dynamic-array declarations and ArraySetAsSeries. Validate returned element counts before access. MetaQuotes |
| MT5 · Runtime errors | 5056 ERR_SERIES_ARRAY | Timeseries cannot be used | YI GOLD suggestionsCheck length, bounds, dynamic-array declarations and ArraySetAsSeries. Validate returned element counts before access. MetaQuotes |
| MT5 · Runtime errors | 5057 ERR_DOUBLE_ARRAY_ONLY | Must be an array of type double | YI GOLD suggestionsCheck length, bounds, dynamic-array declarations and ArraySetAsSeries. Validate returned element counts before access. MetaQuotes |
| MT5 · Runtime errors | 5058 ERR_FLOAT_ARRAY_ONLY | Must be an array of type float | YI GOLD suggestionsCheck length, bounds, dynamic-array declarations and ArraySetAsSeries. Validate returned element counts before access. MetaQuotes |
| MT5 · Runtime errors | 5059 ERR_LONG_ARRAY_ONLY | Must be an array of type long | YI GOLD suggestionsCheck length, bounds, dynamic-array declarations and ArraySetAsSeries. Validate returned element counts before access. MetaQuotes |
| MT5 · Runtime errors | 5060 ERR_INT_ARRAY_ONLY | Must be an array of type int | YI GOLD suggestionsCheck length, bounds, dynamic-array declarations and ArraySetAsSeries. Validate returned element counts before access. MetaQuotes |
| MT5 · Runtime errors | 5061 ERR_SHORT_ARRAY_ONLY | Must be an array of type short | YI GOLD suggestionsCheck length, bounds, dynamic-array declarations and ArraySetAsSeries. Validate returned element counts before access. MetaQuotes |
| MT5 · Runtime errors | 5062 ERR_CHAR_ARRAY_ONLY | Must be an array of type char | YI GOLD suggestionsCheck length, bounds, dynamic-array declarations and ArraySetAsSeries. Validate returned element counts before access. MetaQuotes |
| MT5 · Runtime errors | 5063 ERR_STRING_ARRAY_ONLY | String array only | YI GOLD suggestionsCheck length, bounds, dynamic-array declarations and ArraySetAsSeries. Validate returned element counts before access. MetaQuotes |
| MT5 · Runtime errors | 5100 ERR_OPENCL_NOT_SUPPORTED | OpenCL functions are not supported on this computer | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5101 ERR_OPENCL_INTERNAL | Internal error occurred when running OpenCL | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5102 ERR_OPENCL_INVALID_HANDLE | Invalid OpenCL handle | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5103 ERR_OPENCL_CONTEXT_CREATE | Error creating the OpenCL context | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5104 ERR_OPENCL_QUEUE_CREATE | Failed to create a run queue in OpenCL | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5105 ERR_OPENCL_PROGRAM_CREATE | Error occurred when compiling an OpenCL program | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5106 ERR_OPENCL_TOO_LONG_KERNEL_NAME | Too long kernel name (OpenCL kernel) | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5107 ERR_OPENCL_KERNEL_CREATE | Error creating an OpenCL kernel | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5108 ERR_OPENCL_SET_KERNEL_PARAMETER | Error occurred when setting parameters for the OpenCL kernel | YI GOLD suggestionsCompare each argument and reference mode with the official signature. Validate ranges and preserve relevant failure context. MetaQuotes |
| MT5 · Runtime errors | 5109 ERR_OPENCL_EXECUTE | OpenCL program runtime error | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5110 ERR_OPENCL_WRONG_BUFFER_SIZE | Invalid size of the OpenCL buffer | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5111 ERR_OPENCL_WRONG_BUFFER_OFFSET | Invalid offset in the OpenCL buffer | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5112 ERR_OPENCL_BUFFER_CREATE | Failed to create an OpenCL buffer | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5113 ERR_OPENCL_TOO_MANY_OBJECTS | Too many OpenCL objects | YI GOLD suggestionsVerify chart ID, object existence and property types. Check creation/update results and avoid name collisions. MetaQuotes |
| MT5 · Runtime errors | 5114 ERR_OPENCL_SELECTDEVICE | OpenCL device selection error | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5120 ERR_DATABASE_INTERNAL | Internal database error | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5121 ERR_DATABASE_INVALID_HANDLE | Invalid database handle | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5122 ERR_DATABASE_TOO_MANY_OBJECTS | Exceeded the maximum acceptable number of Database objects | YI GOLD suggestionsVerify chart ID, object existence and property types. Check creation/update results and avoid name collisions. MetaQuotes |
| MT5 · Runtime errors | 5123 ERR_DATABASE_CONNECT | Database connection error | 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 |
| MT5 · Runtime errors | 5124 ERR_DATABASE_EXECUTE | Request execution error | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5125 ERR_DATABASE_PREPARE | Request generation error | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5126 ERR_DATABASE_NO_MORE_DATA | No more data to read | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5127 ERR_DATABASE_STEP | Failed to move to the next request entry | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5128 ERR_DATABASE_NOT_READY | Data for reading request results are not ready yet | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
| MT5 · Runtime errors | 5129 ERR_DATABASE_BIND_PARAMETERS | Failed to auto substitute parameters to an SQL request | YI GOLD suggestionsCompare each argument and reference mode with the official signature. Validate ranges and preserve relevant failure context. MetaQuotes |
| MT5 · Runtime errors | 5200 ERR_WEBREQUEST_INVALID_ADDRESS | Invalid URL | YI GOLD suggestionsInspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description. MetaQuotes |
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