Adding a prefix to a product line

Congratulations! We have automation of importing goods from a supplier + connection by product model range. The problem is that the article numbers are mixed with other supplier article numbers and it is tied to the model range with the wrong product. It turns out just chaos. We need a refinement that will add a prefix to the articles for each supplier. In general, we add a prefix for each supplier as standard, but for some reason it is the model range that substitutes the usual supplier article number. [file]24384[/file] In the screenshot you can see that the prefix is used but for some reason it is not in the model range. Please give an idea of how much it will cost to fix it. Thank you! [file]24384[/file] [file]24384[/file]