Incoming invoice is a document that records the purchase of products from a particular supplier
Go to the menu / administration and click on New document (in the upper left corner of the screen):

On the window that opens Create a new document, click New Arrival

In the New Arrival window that opens, select Whether to write off cash from the cash register , and select the Supplier .
We indicate : product name, barcode (optional), quantity, price.

To add another product, click on “ + ”, at the end click on “ Save ”
☝🏼 If you do not write off cash from the cash register, and have chosen a supplier, then this receipt of goods will go into debt for the supplier, for more details, see the lesson “How to settle with a supplier”