A chargeback with the reason Duplicate means a customer told their bank you charged them twice. Before you respond, you need to know whether that's true. This guide explains what the reason means, the usual causes, how to find these orders, how to respond and how to prevent repeats.
What "Duplicate" means
Shopify says this reason means the customer believes you charged them twice for the same product or service. The disputed amount and a chargeback fee are taken from you when the dispute opens. The card issuer, not Shopify, decides who wins.
- Customer's claim: Charged twice for one purchase
- Funds: Amount plus a fee taken from you
- Decides: The card issuer
Common causes
Sometimes there really were two charges for one order. More often, there were two separate purchases that look alike on a card statement.
- Real duplicate: The customer submitted twice and you shipped once
- Two orders: Separate purchases of the same item on the same day
- Split payments: A deposit now and a balance later
- Add-ons: A second charge for an item added after the first order
Find the affected orders
Go to Orders, add the filter Chargeback and inquiry status and choose Open. Open each order and check the reason code in the chargeback details. Then search for the customer's name or email to see every order they placed around that date.
- Filter: Chargeback and inquiry status = Open
- Search: Customer email for nearby orders
- Compare: Items, amounts and fulfillment for each
Fix it step by step
If you did charge twice for the same item, Shopify says you must accept the chargeback. You can do that with Accept chargeback in the banner. You can't issue a refund once a chargeback is open, so don't refund on top of it.
If the charges were for different things, contact the customer first and explain both orders. If they agree, ask them to have their bank withdraw the dispute. Either way, click Add evidence and include what Shopify recommends.
- Explanation: Why there are two charges
- Receipts: Showing different products or services
- Messages: Where you told the customer about both charges
Your response goes in on the due date even if you add nothing. See chargeback reasons explained for how this reason compares to the others.
Prevent the next one
Most duplicate disputes start with confusion. Clear order emails and a quick check of same-day repeat orders stop many of them.
- ✅ Check for repeat orders from the same customer on the same day
- ✅ Ask before fulfilling an apparent double order
- ✅ Explain deposits and balance payments at checkout
- ❌ Shipping both copies without asking
Doing this at scale
RiskClarity reviews each paid order, explains the risk in plain English with the fraud signals behind it, and recommends allow, verify or hold. You decide with one click, and every decision is logged in an audit log you can export for chargeback disputes. See RiskClarity.