Trade Server Return Codes

GetLastError() - returns error codes. Error codes are defined in stderror.mqh. To print the error description you can use the ErrorDescription() function, defined in stdlib.mqh.

Example:

#include <stderror.mqh>
#include <stdlib.mqh>
void SendMyMessage(string text)
  {
   int check;
   SendMail("Test", text);
   check=GetLastError();
   if(check!=ERR_NO_ERROR) Print("Message not sent. Error: ",ErrorDescription(check));
  }

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

Last updated on 2026-06-26

Compiler Warnings