Invoicing is automatically linked to stock. Go under Finances - Invoices - New invoice, the view for creating a new invoice appears. Enter all relevant data of your invoice as usual.

At step #4, you can add your desired positions where you can also "Warehouse" area is available. After selecting a product, you can see here in which warehouses your product is available. In addition, the available quantity of the product in the respective warehouses is also indicated.

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Also select the quantity of each product to be charged for your invoice.

If the quantity falls below the minimum stock stored for the product or the available quantity, a message will appear immediately. This supports efficient merchandise management, since you can make a new purchase immediately after the invoice has been generated in order to top up the necessary product again.

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The stock is automatically reduced after the invoice has been created.