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