You've spent weeks building hype for your latest product drop. The clock strikes noon, and the orders start pouring in. It looks like a massive success—until your operations team looks at the backend.
One customer has placed four separate orders in ten minutes. Another is trying to bypass your "1 per SKU" limit by using different email addresses but the same shipping info. Suddenly, your "success" has turned into hours of manual busywork, potential chargebacks, and a logistical mess.
As many merchants have discovered the hard way, Shopify is great at taking orders, but it isn't built to enforce purchase limits across multiple transactions. If a customer buys one item at 1:00 PM and another at 1:05 PM, Shopify treats them as two perfectly valid, independent sales.
Many "tech-savvy" merchants try to use Shopify Flow to solve this. They set up triggers to count orders within a 24-hour window. But as Reddit threads show, Flow can be notoriously unreliable for this specific task. It often ignores SKU-specific filters or fires incorrectly, leading to internal email spam or, worse, canceling the wrong orders.
Your team spends hours "manually scanning" orders to find matches before they hit the warehouse. This is time that could be spent on growth.
If you don't catch them, you pay for two labels when one would have sufficed—or you're stuck manually merging them, which "consumes much time and effort".
High-frequency orders from the same card are a red flag. Merchants have reported "gut feelings" about duplicate orders that ended in costly chargebacks.
Most apps on the market are "Order Mergers." They are built to save you on postage by tying boxes together. But they don't protect your inventory or your policies.
Duplicate Guard was built specifically to fill this gap. It doesn't just "merge"—it guards.
Our Philosophy: We identify. You decide.
Unlike generic automation, Duplicate Guard accurately tracks SKU-specific purchases across a 24-hour window, ensuring your "1 per customer" rule actually sticks.
Stop playing detective. The app automatically flags or pauses orders that match your duplicate criteria (same shipping address, same billing, or same SKU).
By catching duplicate abuse and suspicious repeat orders early, you significantly reduce the risk of fraud and chargebacks.
Don't let manual order management be the bottleneck that kills your growth. Your team should be focused on marketing and expansion, not hunting down duplicate SKUs in an Excel sheet.
Install Duplicate Guard on Shopify