My EA Uploaded to the market——Feedback the automatic test results，what happened？

[Yong Zhang]

Has anyone ever met？

[Sergey Golubev]

Invalid volume .... broker does not allow to trade 0.01 lot size for this account? so - download more historical data (is it MT4 or MT5) and try to change lot size to 0.1.

[Mohammed Abdulwadud Soubra]

Maybe you have to use

NormalizeDouble() for the lot size

[Fernando Carreiro]

Yong Zhang: Has anyone ever met？

Your code should always check the broker's conditions for allowable volume/lots. Use the "SymbolInfoDouble()" function to obtain the correct details for:

SYMBOL_VOLUME_MIN	Minimal volume for a deal	double
SYMBOL_VOLUME_MAX	Maximal volume for a deal	double
SYMBOL_VOLUME_STEP	Minimal volume change step for deal execution	double
SYMBOL_VOLUME_LIMIT	Maximum allowed aggregate volume of an open position and pending orders in one direction (buy or sell) for the symbol. For example, with the limitation of 5 lots, you can have an open buy position with the volume of 5 lots and place a pending order Sell Limit with the volume of 5 lots. But in this case you cannot place a Buy Limit pending order (since the total volume in one direction will exceed the limitation) or place Sell Limit with the volume more than 5 lots.	double

[Yong Zhang]

Mohammad Soubra:
Maybe you have to use

NormalizeDouble() for the lot size

I have checked it, not for this reason.I deleted NormalizeDouble() ，The result is the same,Is there a possibility of historical data

[Alain Verleyen]

Yong Zhang:
I have checked it, not for this reason.I deleted NormalizeDouble() ，The result is the same,Is there a possibility of historical data

You should read and apply Fernando advice.

There are plenty of topics about this issue on the forum.

[Fernando Carreiro]

Yong Zhang: I have checked it, not for this reason.I deleted NormalizeDouble() ，The result is the same,Is there a possibility of historical data

You don't use NormalizeDouble. You normalise the volume/lots by aligning it with the Volume Step (SYMBOL_VOLUME_STEP) and checking it against the allowable Minimum (SYMBOL_VOLUME_MIN) and Maximum (SYMBOL_VOLUME_MAX) values (see my previous post).

[Yong Zhang]

Fernando Carreiro:

You don't use NormalizeDouble. You normalise the volume/lots by aligning it with the Volume Step (SYMBOL_VOLUME_STEP) and checking it against the allowable Minimum (SYMBOL_VOLUME_MIN) and Maximum (SYMBOL_VOLUME_MAX) values (see my previous post).

Thank you very much for your guidance，I have finished editing it  through this method.

[Yong Zhang]

阿兰·维利恩:

你应该阅读并应用Fernando建议。

论坛上有很多关于这个问题的话题。

That's right，thank you very much.