Picture a textile wholesaler with a hundred product lines in the warehouse. Some items have been sitting untouched for years, tying up cash and floor space. Others run out constantly, leaving customer orders unfilled. The warehouse is eating money, capital is locked in slow-moving goods, and the best-selling lines still show ‘out of stock.’ After the economic crisis of 2001, this situation is painfully familiar to many small and mid-sized businesses in Turkey. The obvious answer is to cut stock — but which stock, and by how much?
This is where SCM (supply chain management) software comes in. These programs take inventory decisions out of the realm of gut feeling and put them into numbers. The core idea is straightforward: every product should have its own service target. For each item, you answer one question — ‘what percentage of customer orders for this product do I want to fill on time?’ Based on your answer, the program calculates the minimum buffer stock you need to keep on hand. This buffer is called ‘safety stock.’
Think of safety stock like this: your supplier might deliver late, or your sales forecast might be off. Safety stock is the cushion you keep to cover those uncertainties. Too little and you risk running out; too much and your money sits idle in the warehouse. The SCM program does this calculation for you. You feed in how much demand varies from week to week, how long and how unpredictable your supply lead times are — and the program tells you how much safety stock to hold for each item.
Why should service targets differ by product? Because not every item carries the same weight for your business. For your top sellers, your highest-margin lines, or products your customers cannot easily find elsewhere, you set a high service target — say, ninety-five percent. That means you aim to fill ninety-five percent of orders on time. For slow movers, easily substituted items, or low-margin goods, you can drop that target to eighty percent. That seemingly small difference translates into a meaningful reduction in required safety stock. Less stock means less cash tied up and less warehouse space consumed.
Here is a concrete example. Say you carry two products: a slow-moving machine part made to special order, and a fast-moving standard consumable. For the machine part, the customer has no alternative supplier — a delay shuts down their production line. You have to keep your service target high. For the consumable, competitors carry it too, and the customer can wait a day. You can afford to lower the target and trim your safety stock. The SCM program calculates different safety stock levels for each item and tells you plainly: keep this much of one, reduce the other. Total warehouse value goes down; critical product availability stays up.
Setting up and running these programs is not simple. Before the software can do anything useful, you have to decide on service targets yourself — that judgment belongs to you, not the machine. Which products are critical? Which customers cannot afford to wait? Answering those questions requires a solid understanding of your sales history and your customer base. The program also needs clean, consistent past demand data to calculate accurately. If your stock records have been kept by hand or your accounting entries are scattered, the program will struggle to produce reliable output. Getting that data in order before installation takes real time and effort.
For a small business owner weighing this decision, one question cuts to the heart of it: how do you manage your inventory today? If the honest answer is ‘by instinct’ or ‘by experience,’ and you are simultaneously dealing with excess stock on some lines and stockouts on others, SCM software can make a genuine difference. But start with the groundwork: review your product list, decide which items are truly critical, and gather your past sales data. Without that preparation, the software cannot help you. With it, the program shows you a path to lower stock levels and stronger customer service at the same time — and in a tight cash environment, that combination is worth paying attention to.
This article was originally written in Turkish by Gökhan MERCANOĞLU on May 6, 2002 and has been automatically translated into English and other languages using machine translation.