Codes of Errors and Warnings

This section contains the following descriptions:

• Return codes of the trade server — analyzing results of the trade request sent by function OrderSend();
• Compiler warnings — codes of warning messages that appear at compilation (not errors);
• Compilation errors — codes of error messages at an unsuccessful attempt to compile;
• Runtime errors — error codes in the execution of mql4-programs, which can be obtained using the GetLastError() function.