What Does NDR Mean? Non-Delivery Report Explained for Shopify Merchants

NDR stands for Non-Delivery Report. It is an alert a courier partner sends to the seller when a shipment could not be delivered on a scheduled attempt, along with the reason why. An NDR is not the end of the shipment's journey. It is a flag that action is needed, either to reattempt delivery, contact the customer, or mark the order for return.

What triggers an NDR?

Couriers typically raise an NDR for reasons like:

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• The customer was not available to receive the order
• The address could not be located or was incomplete
• The customer requested a delivery reschedule
• The customer refused the order at the door, common on COD shipments
• The area was temporarily inaccessible due to weather, local restrictions, or courier network issues

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Each NDR usually comes with a status code and a short reason, which is what triggers the next step for the seller or courier.

What happens after an NDR is raised?

Depending on the courier and the reason logged, one of a few things typically follows:

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• The courier reattempts delivery automatically, often within 24 to 48 hours
• The seller or courier contacts the customer to confirm availability or update the address
• If reattempts fail or the customer confirms they no longer want the order, the shipment is marked RTO (Return to Origin) and begins moving back to the seller

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This is why NDR and RTO are closely linked. NDR is the warning signal. RTO is often the outcome if the NDR isn't resolved in time.

Why should Shopify merchants track NDR closely?

Every NDR that turns into an RTO is a lost sale plus the cost of both outbound and reverse shipping. Merchants who monitor NDR reasons in aggregate, rather than order by order, can usually spot patterns, like a specific region with high non-availability rates, or a courier partner with more failed first attempts than others, and use that to fix the underlying issue rather than just reacting to individual failed deliveries.

Where does Return Prime fit in?

NDR and delivery-attempt management sit on the logistics and courier side of the order journey, before a product ever reaches the customer. Return Prime's role begins after that, managing the customer-facing return, exchange, and refund experience once a product has been delivered or, in the case of an RTO'd shipment, once it's back with the brand. If an NDR does end in an RTO, the same downstream tools brands use for regular returns, like offering store credit or an exchange instead of a plain refund, can help recover some value from that order instead of writing it off.

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For more on how RTO and related shipment statuses work, see our guide on what RTB Manifested means.

FAQs

What does NDR mean in shipping?

‍NDR stands for Non-Delivery Report. It's an alert from the courier that a delivery attempt failed, along with the reason.

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Is NDR the same as RTO?

‍No. NDR is the failed-attempt alert. RTO is the outcome if the delivery issue isn't resolved and the shipment is sent back to the seller.

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Who is responsible for resolving an NDR, the seller or the courier?

‍It varies by courier contract. Many couriers reattempt delivery automatically, but sellers are often expected to confirm customer availability or updated addresses for repeated NDRs.

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Can an NDR be reversed once raised?

‍Yes. If the delivery issue is resolved, such as the customer confirming availability or correcting the address, the courier can complete delivery on a reattempt without the order being marked RTO.

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Does Return Prime manage NDR alerts?

‍No. Return Prime manages the post-delivery returns and exchange experience. NDR tracking and resolution happen on the courier and logistics side.