Hi, @Mohamed Benhamida . I believe what you are asking for is Multi-Warehouse Sales, which is how to make a sale or create a single invoice that includes items from different warehouses. You will need a good developer to get this done, but below is the list of scripts you will need to modify to achieve this on both the Add Sale & POS modules:
JS Scripts
pos.ajax.js => themes\default\admin\assets\pos\js\pos.ajax.js,
sales.js => themes\default\admin\assets\js\sales.js,
View Scripts
add.php => themes\default\admin\views\pos\add.php,
add.php => themes\default\admin\views\sales\add.php,
edit.php => themes\default\admin\views\sales\edit.php,
return_sale.php => themes\default\admin\views\sales\edit.php,
Controller Scripts
POS.php => themes\default\admin\views\pos\add.php,
Sales.php => themes\default\admin\views\sales\add.php,

You will also need to take a look at the model scripts of the two controller and the the Site.php => app\models\Site.php. I have done a modification on this for many clients, and you can test it on my customization demo by Clicking HERE - Highlights

My name is @Enyinnaya Gift . I am an Independent software developer with in-depth knowledge of SMA system. I have done a lot of customization for many happy clients across the globe.

You can check out highlights and a demo of my latest customization by Clicking HERE - Highlights

You can also reach me via any of the following mediums for a real-time discussion on your customization request:

-Skype ID: enyinnayag
-Wechat ID: genyinnaya
-Email: [email protected]
-WhatsApp: +2348068355192

Hello,

SMA doesn't have such option. You only can add sale from one warehouse. For other, you will need to add another sale.

Thank you