Have you ever stopped to consider what would happen if the suppliers giving retail stores their inventory did not pay attention to the supply chain planning logistics? It could likely result in dozens of retail stores all running out of items that their supplier failed to keep in stock. Knowing that retail stores all rely on a separate supplier means that they are often at the mercy of their supplier to keep adequate inventory levels. This means letting the supplier know about specials and sales in advance so that adequate inventory can be on stock. A poorly executed logistics plan will result in numerous problems with merchandise out of stock.