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Stockouts: how you lose sales without noticing — and how to prevent them

September 3, 2026 · 5 min read · DGD Systems

A bestselling product goes into a good promotion, sales pick up for a few days — and then it goes out of stock without anyone noticing right away. For a while, the listing stays live, customers click, but the order can no longer go through. No visible error shows up in the usual reports — just a sales dip that many people blame on "the season" or the competition.

How big the problem actually is in Romania

Local market data shows this is far from an isolated case:

€3.2Mlost last year by small and mid-sized Romanian retailers due to stock errors
5-15%of a business's profit can be affected by inefficient inventory management
~80%average inventory record accuracy — 1 in 5 records contains errors
40%of small companies don't track inventory at all, or rely only on manual systems

For comparison, organizations with high-performing processes reach around 95% inventory accuracy — the gap between 80% and 95% represents, at scale, exactly the kind of errors that cause stockouts on the products that matter most.

Where stockouts actually come from

  • Inaccurate tracking. Outdated or manually updated systems produce stock records that no longer match what's actually in the warehouse.
  • Unexpected demand. Seasonal spikes, a successful marketing campaign, or a product going viral can push sales far beyond what was planned.
  • Supply delays. Supplier issues or slow logistics, often outside the seller's direct control.
  • Poor forecasting. Underestimating real demand for a product, especially for launches or new products with no sales history.
  • Operational errors. Order-processing mistakes or products misplaced in the warehouse, which "hide" the stock that's actually available.
The good news: according to market data, automation and real-time access to stock data can cut stockouts by up to 50%. You don't need a complex warehousing system — first and foremost, you need real visibility into products that are about to run out.

What you can actually do

  1. Monitor stock per product in real time, not just at the end of the day or week.
  2. Set automatic low-stock alerts based on each product's real sales velocity — not a fixed, arbitrary threshold that ignores whether a product sells fast or slow.
  3. Prioritize your bestsellers. Low stock on a slow-moving product is far less urgent than the same stock level on something that sells every day.
  4. Recalculate after every ad campaign or promotion — exactly the moments when demand spikes and stock planned for a normal month disappears in a few days.

The difference between a seller who keeps losing sales to stockouts and one who doesn't rarely comes down to a complex management system — it comes down to simply getting the signal in time, before stock actually hits zero.

See ahead of time which products are at risk of running out

DGD Systems automatically shows you which products may run out of stock in the coming days, calculated from real sales velocity — not a fixed threshold.

See the plans

Sources used for the data in this article: clubitc.ro.