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====== MT4 Error Code ======

下表从MQL4帮助文档复制而来：\\
MQL4 Reference  /  Constants, Enumerations and Structures  /  Codes of Errors and Warnings / Runtime Errors 

  * 1 - 150 : 服务器返回的错误代码
  * 4000 - : MQL4运行的错误代码

^ Code   ^ ID                                   ^ Description                                                                                  ^
| 0      | ERR_NO_ERROR                         | No error returned                                                                            |
| 1      | ERR_NO_RESULT                        | No error returned, but the result is unknown                                                 |
| 2      | ERR_COMMON_ERROR                     | Common error                                                                                 |
| 3      | ERR_INVALID_TRADE_PARAMETERS         | Invalid trade parameters                                                                     |
| 4      | ERR_SERVER_BUSY                      | Trade server is busy                                                                         |
| 5      | ERR_OLD_VERSION                      | Old version of the client terminal                                                           |
| 6      | ERR_NO_CONNECTION                    | No connection with trade server                                                              |
| 7      | ERR_NOT_ENOUGH_RIGHTS                | Not enough rights                                                                            |
| 8      | ERR_TOO_FREQUENT_REQUESTS            | Too frequent requests                                                                        |
| 9      | ERR_MALFUNCTIONAL_TRADE              | Malfunctional trade operation                                                                |
| 64     | ERR_ACCOUNT_DISABLED                 | Account disabled                                                                             |
| 65     | ERR_INVALID_ACCOUNT                  | Invalid account                                                                              |
| 128    | ERR_TRADE_TIMEOUT                    | Trade timeout                                                                                |
| 129    | ERR_INVALID_PRICE                    | Invalid price                                                                                |
| 130    | ERR_INVALID_STOPS                    | Invalid stops                                                                                |
| 131    | ERR_INVALID_TRADE_VOLUME             | Invalid trade volume                                                                         |
| 132    | ERR_MARKET_CLOSED                    | Market is closed                                                                             |
| 133    | ERR_TRADE_DISABLED                   | Trade is disabled                                                                            |
| 134    | ERR_NOT_ENOUGH_MONEY                 | Not enough money                                                                             |
| 135    | ERR_PRICE_CHANGED                    | Price changed                                                                                |
| 136    | ERR_OFF_QUOTES                       | Off quotes                                                                                   |
| 137    | ERR_BROKER_BUSY                      | Broker is busy                                                                               |
| 138    | ERR_REQUOTE                          | Requote                                                                                      |
| 139    | ERR_ORDER_LOCKED                     | Order is locked                                                                              |
| 140    | ERR_LONG_POSITIONS_ONLY_ALLOWED      | Buy orders only allowed                                                                      |
| 141    | ERR_TOO_MANY_REQUESTS                | Too many requests                                                                            |
| 145    | ERR_TRADE_MODIFY_DENIED              | Modification denied because order is too close to market                                     |
| 146    | ERR_TRADE_CONTEXT_BUSY               | Trade context is busy                                                                        |
| 147    | ERR_TRADE_EXPIRATION_DENIED          | Expirations are denied by broker                                                             |
| 148    | ERR_TRADE_TOO_MANY_ORDERS            | The amount of open and pending orders has reached the limit set by the broker                |
| 149    | ERR_TRADE_HEDGE_PROHIBITED           | An attempt to open an order opposite to the existing one when hedging is disabled            |
| 150    | ERR_TRADE_PROHIBITED_BY_FIFO         | An attempt to close an order contravening the FIFO rule                                      |
| 4000   | ERR_NO_MQLERROR                      | No error returned                                                                            |
| 4001   | ERR_WRONG_FUNCTION_POINTER           | Wrong function pointer                                                                       |
| 4002   | ERR_ARRAY_INDEX_OUT_OF_RANGE         | Array index is out of range                                                                  |
| 4003   | ERR_NO_MEMORY_FOR_CALL_STACK         | No memory for function call stack                                                            |
| 4004   | ERR_RECURSIVE_STACK_OVERFLOW         | Recursive stack overflow                                                                     |
| 4005   | ERR_NOT_ENOUGH_STACK_FOR_PARAM       | Not enough stack for parameter                                                               |
| 4006   | ERR_NO_MEMORY_FOR_PARAM_STRING       | No memory for parameter string                                                               |
| 4007   | ERR_NO_MEMORY_FOR_TEMP_STRING        | No memory for temp string                                                                    |
| 4008   | ERR_NOT_INITIALIZED_STRING           | Not initialized string                                                                       |
| 4009   | ERR_NOT_INITIALIZED_ARRAYSTRING      | Not initialized string in array                                                              |
| 4010   | ERR_NO_MEMORY_FOR_ARRAYSTRING        | No memory for array string                                                                   |
| 4011   | ERR_TOO_LONG_STRING                  | Too long string                                                                              |
| 4012   | ERR_REMAINDER_FROM_ZERO_DIVIDE       | Remainder from zero divide                                                                   |
| 4013   | ERR_ZERO_DIVIDE                      | Zero divide                                                                                  |
| 4014   | ERR_UNKNOWN_COMMAND                  | Unknown command                                                                              |
| 4015   | ERR_WRONG_JUMP                       | Wrong jump (never generated error)                                                           |
| 4016   | ERR_NOT_INITIALIZED_ARRAY            | Not initialized array                                                                        |
| 4017   | ERR_DLL_CALLS_NOT_ALLOWED            | DLL calls are not allowed                                                                    |
| 4018   | ERR_CANNOT_LOAD_LIBRARY              | Cannot load library                                                                          |
| 4019   | ERR_CANNOT_CALL_FUNCTION             | Cannot call function                                                                         |
| 4020   | ERR_EXTERNAL_CALLS_NOT_ALLOWED       | Expert function calls are not allowed                                                        |
| 4021   | ERR_NO_MEMORY_FOR_RETURNED_STR       | Not enough memory for temp string returned from function                                     |
| 4022   | ERR_SYSTEM_BUSY                      | System is busy (never generated error)                                                       |
| 4023   | ERR_DLLFUNC_CRITICALERROR            | DLL-function call critical error                                                             |
| 4024   | ERR_INTERNAL_ERROR                   | Internal error                                                                               |
| 4025   | ERR_OUT_OF_MEMORY                    | Out of memory                                                                                |
| 4026   | ERR_INVALID_POINTER                  | Invalid pointer                                                                              |
| 4027   | ERR_FORMAT_TOO_MANY_FORMATTERS       | Too many formatters in the format function                                                   |
| 4028   | ERR_FORMAT_TOO_MANY_PARAMETERS       | Parameters count exceeds formatters count                                                    |
| 4029   | ERR_ARRAY_INVALID                    | Invalid array                                                                                |
| 4030   | ERR_CHART_NOREPLY                    | No reply from chart                                                                          |
| 4050   | ERR_INVALID_FUNCTION_PARAMSCNT       | Invalid function parameters count                                                            |
| 4051   | ERR_INVALID_FUNCTION_PARAMVALUE      | Invalid function parameter value                                                             |
| 4052   | ERR_STRING_FUNCTION_INTERNAL         | String function internal error                                                               |
| 4053   | ERR_SOME_ARRAY_ERROR                 | Some array error                                                                             |
| 4054   | ERR_INCORRECT_SERIESARRAY_USING      | Incorrect series array using                                                                 |
| 4055   | ERR_CUSTOM_INDICATOR_ERROR           | Custom indicator error                                                                       |
| 4056   | ERR_INCOMPATIBLE_ARRAYS              | Arrays are incompatible                                                                      |
| 4057   | ERR_GLOBAL_VARIABLES_PROCESSING      | Global variables processing error                                                            |
| 4058   | ERR_GLOBAL_VARIABLE_NOT_FOUND        | Global variable not found                                                                    |
| 4059   | ERR_FUNC_NOT_ALLOWED_IN_TESTING      | Function is not allowed in testing mode                                                      |
| 4060   | ERR_FUNCTION_NOT_CONFIRMED           | Function is not allowed for call                                                             |
| 4061   | ERR_SEND_MAIL_ERROR                  | Send mail error                                                                              |
| 4062   | ERR_STRING_PARAMETER_EXPECTED        | String parameter expected                                                                    |
| 4063   | ERR_INTEGER_PARAMETER_EXPECTED       | Integer parameter expected                                                                   |
| 4064   | ERR_DOUBLE_PARAMETER_EXPECTED        | Double parameter expected                                                                    |
| 4065   | ERR_ARRAY_AS_PARAMETER_EXPECTED      | Array as parameter expected                                                                  |
| 4066   | ERR_HISTORY_WILL_UPDATED             | Requested history data is in updating state                                                  |
| 4067   | ERR_TRADE_ERROR                      | Internal trade error                                                                         |
| 4068   | ERR_RESOURCE_NOT_FOUND               | Resource not found                                                                           |
| 4069   | ERR_RESOURCE_NOT_SUPPORTED           | Resource not supported                                                                       |
| 4070   | ERR_RESOURCE_DUPLICATED              | Duplicate resource                                                                           |
| 4071   | ERR_INDICATOR_CANNOT_INIT            | Custom indicator cannot initialize                                                           |
| 4072   | ERR_INDICATOR_CANNOT_LOAD            | Cannot load custom indicator                                                                 |
| 4073   | ERR_NO_HISTORY_DATA                  | No history data                                                                              |
| 4074   | ERR_NO_MEMORY_FOR_HISTORY            | No memory for history data                                                                   |
| 4075   | ERR_NO_MEMORY_FOR_INDICATOR          | Not enough memory for indicator calculation                                                  |
| 4099   | ERR_END_OF_FILE                      | End of file                                                                                  |
| 4100   | ERR_SOME_FILE_ERROR                  | Some file error                                                                              |
| 4101   | ERR_WRONG_FILE_NAME                  | Wrong file name                                                                              |
| 4102   | ERR_TOO_MANY_OPENED_FILES            | Too many opened files                                                                        |
| 4103   | ERR_CANNOT_OPEN_FILE                 | Cannot open file                                                                             |
| 4104   | ERR_INCOMPATIBLE_FILEACCESS          | Incompatible access to a file                                                                |
| 4105   | ERR_NO_ORDER_SELECTED                | No order selected                                                                            |
| 4106   | ERR_UNKNOWN_SYMBOL                   | Unknown symbol                                                                               |
| 4107   | ERR_INVALID_PRICE_PARAM              | Invalid price                                                                                |
| 4108   | ERR_INVALID_TICKET                   | Invalid ticket                                                                               |
| 4109   | ERR_TRADE_NOT_ALLOWED                | Trade is not allowed. Enable checkbox "Allow live trading" in the Expert Advisor properties  |
| 4110   | ERR_LONGS_NOT_ALLOWED                | Longs are not allowed. Check the Expert Advisor properties                                   |
| 4111   | ERR_SHORTS_NOT_ALLOWED               | Shorts are not allowed. Check the Expert Advisor properties                                  |
| 4112   | ERR_TRADE_EXPERT_DISABLED_BY_SERVER  | Automated trading by Expert Advisors/Scripts disabled by trade server                        |
| 4200   | ERR_OBJECT_ALREADY_EXISTS            | Object already exists                                                                        |
| 4201   | ERR_UNKNOWN_OBJECT_PROPERTY          | Unknown object property                                                                      |
| 4202   | ERR_OBJECT_DOES_NOT_EXIST            | Object does not exist                                                                        |
| 4203   | ERR_UNKNOWN_OBJECT_TYPE              | Unknown object type                                                                          |
| 4204   | ERR_NO_OBJECT_NAME                   | No object name                                                                               |
| 4205   | ERR_OBJECT_COORDINATES_ERROR         | Object coordinates error                                                                     |
| 4206   | ERR_NO_SPECIFIED_SUBWINDOW           | No specified subwindow                                                                       |
| 4207   | ERR_SOME_OBJECT_ERROR                | Graphical object error                                                                       |
| 4210   | ERR_CHART_PROP_INVALID               | Unknown chart property                                                                       |
| 4211   | ERR_CHART_NOT_FOUND                  | Chart not found                                                                              |
| 4212   | ERR_CHARTWINDOW_NOT_FOUND            | Chart subwindow not found                                                                    |
| 4213   | ERR_CHARTINDICATOR_NOT_FOUND         | Chart indicator not found                                                                    |
| 4220   | ERR_SYMBOL_SELECT                    | Symbol select error                                                                          |
| 4250   | ERR_NOTIFICATION_ERROR               | Notification error                                                                           |
| 4251   | ERR_NOTIFICATION_PARAMETER           | Notification parameter error                                                                 |
| 4252   | ERR_NOTIFICATION_SETTINGS            | Notifications disabled                                                                       |
| 4253   | ERR_NOTIFICATION_TOO_FREQUENT        | Notification send too frequent                                                               |
| 4260   | ERR_FTP_NOSERVER                     | FTP server is not specified                                                                  |
| 4261   | ERR_FTP_NOLOGIN                      | FTP login is not specified                                                                   |
| 4262   | ERR_FTP_CONNECT_FAILED               | FTP connection failed                                                                        |
| 4263   | ERR_FTP_CLOSED                       | FTP connection closed                                                                        |
| 4264   | ERR_FTP_CHANGEDIR                    | FTP path not found on server                                                                 |
| 4265   | ERR_FTP_FILE_ERROR                   | File not found in the MQL4\Files directory to send on FTP server                             |
| 4266   | ERR_FTP_ERROR                        | Common error during FTP data transmission                                                    |
| 5001   | ERR_FILE_TOO_MANY_OPENED             | Too many opened files                                                                        |
| 5002   | ERR_FILE_WRONG_FILENAME              | Wrong file name                                                                              |
| 5003   | ERR_FILE_TOO_LONG_FILENAME           | Too long file name                                                                           |
| 5004   | ERR_FILE_CANNOT_OPEN                 | Cannot open file                                                                             |
| 5005   | ERR_FILE_BUFFER_ALLOCATION_ERROR     | Text file buffer allocation error                                                            |
| 5006   | ERR_FILE_CANNOT_DELETE               | Cannot delete file                                                                           |
| 5007   | ERR_FILE_INVALID_HANDLE              | Invalid file handle (file closed or was not opened)                                          |
| 5008   | ERR_FILE_WRONG_HANDLE                | Wrong file handle (handle index is out of handle table)                                      |
| 5009   | ERR_FILE_NOT_TOWRITE                 | File must be opened with FILE_WRITE flag                                                     |
| 5010   | ERR_FILE_NOT_TOREAD                  | File must be opened with FILE_READ flag                                                      |
| 5011   | ERR_FILE_NOT_BIN                     | File must be opened with FILE_BIN flag                                                       |
| 5012   | ERR_FILE_NOT_TXT                     | File must be opened with FILE_TXT flag                                                       |
| 5013   | ERR_FILE_NOT_TXTORCSV                | File must be opened with FILE_TXT or FILE_CSV flag                                           |
| 5014   | ERR_FILE_NOT_CSV                     | File must be opened with FILE_CSV flag                                                       |
| 5015   | ERR_FILE_READ_ERROR                  | File read error                                                                              |
| 5016   | ERR_FILE_WRITE_ERROR                 | File write error                                                                             |
| 5017   | ERR_FILE_BIN_STRINGSIZE              | String size must be specified for binary file                                                |
| 5018   | ERR_FILE_INCOMPATIBLE                | Incompatible file (for string arrays-TXT, for others-BIN)                                    |
| 5019   | ERR_FILE_IS_DIRECTORY                | File is directory not file                                                                   |
| 5020   | ERR_FILE_NOT_EXIST                   | File does not exist                                                                          |
| 5021   | ERR_FILE_CANNOT_REWRITE              | File cannot be rewritten                                                                     |
| 5022   | ERR_FILE_WRONG_DIRECTORYNAME         | Wrong directory name                                                                         |
| 5023   | ERR_FILE_DIRECTORY_NOT_EXIST         | Directory does not exist                                                                     |
| 5024   | ERR_FILE_NOT_DIRECTORY               | Specified file is not directory                                                              |
| 5025   | ERR_FILE_CANNOT_DELETE_DIRECTORY     | Cannot delete directory                                                                      |
| 5026   | ERR_FILE_CANNOT_CLEAN_DIRECTORY      | Cannot clean directory                                                                       |
| 5027   | ERR_FILE_ARRAYRESIZE_ERROR           | Array resize error                                                                           |
| 5028   | ERR_FILE_STRINGRESIZE_ERROR          | String resize error                                                                          |
| 5029   | ERR_FILE_STRUCT_WITH_OBJECTS         | Structure contains strings or dynamic arrays                                                 |
| 5200   | ERR_WEBREQUEST_INVALID_ADDRESS       | Invalid URL                                                                                  |
| 5201   | ERR_WEBREQUEST_CONNECT_FAILED        | Failed to connect to specified URL                                                           |
| 5202   | ERR_WEBREQUEST_TIMEOUT               | Timeout exceeded                                                                             |
| 5203   | ERR_WEBREQUEST_REQUEST_FAILED        | HTTP request failed                                                                          |
|        | User errors                          |                                                                                              |
| 65536  | ERR_USER_ERROR_FIRST                 | User defined errors start with this code                                                     |