Explainer
EDI and ASNs, explained
Most trade between suppliers and large retailers happens as structured electronic documents. Knowing which document says what is not an IT concern: it is the difference between a clean payment and a deduction.
By The Retail Ledger · September 27, 2026
The documents that matter
The purchase order, the order acknowledgment, the advance ship notice, the invoice and the remittance advice. The ASN is the one that causes the most trouble: it tells the retailer what is arriving, at carton level, before it arrives, and the receiving process is built around it.
If the ASN does not match what is in the cartons, the retailer's receiving system flags a discrepancy against the supplier, not against the carrier or the warehouse.
Why ASN accuracy drives deductions
Receiving is automated around scanning carton labels against the ASN. A mismatch stops the line and requires manual handling, which is precisely what compliance programs penalize. That is why ASN errors show up as deductions under the documentation and labeling categories described in the chargebacks guide.
What to get right
Send the ASN before the truck, not with it. Make carton labels match the ASN exactly, including the carton identifiers. Reconcile the ASN against what actually shipped rather than against what was picked. And keep the transmitted file, because in a dispute it is the contemporaneous record of what you said was coming.
Questions
What is an ASN?
An advance ship notice: an electronic message sent before delivery describing what is arriving, usually at carton level.
Why do ASN errors cost money?
Because retailer receiving is automated around the ASN, and a mismatch forces manual handling, which compliance programs penalize.
Is EDI still used?
Yes, extensively. Newer APIs exist alongside it, but EDI remains the standard for most large retail trading relationships.
Related: vendor scorecards.