A very quick question

[Tsz Yau Lo]

Hello guys, I am new to coding mql5 or mql4. What should be the first ticket number? I have seen in the documentation that an error is -1. But I wonder what should be the first ticket number? 1 or 0? As I have seen in examples that if ticket number > 0, then an order is sent successfully.

[Roberto Jacobs]

Tim:

Hello guys, I am new to coding mql5 or mql4. What should be the first ticket number? I have seen in the documentation that an error is -1. But I wonder what should be the first ticket number? 1 or 0? As I have seen in examples that if ticket number > 0, then an order is sent successfully.

and -1 mean an order send is unsuccessful