Disputing an EDI chargeback with evidence, not argument
A chargeback is decided on documents. The retailer's system already believes its own record; your job is to show a document that predates the failure and contradicts it.
Most disputes are lost because the supplier sends a screenshot of an email instead of the raw 824.
Get a fixed quote Decode an 824
The four pieces of evidence
Attach all four, or expect a denial:
- The raw 824 or 997 — the actual text, with its timestamp. Not a screenshot, not a summary.
- The corrected document — what was resent, with the control number.
- Proof of delivery or receipt — carrier POD, or the retailer's own receipt record.
- The timing — a timestamp showing the document was sent before the deadline in the supplier agreement.
The message
Short, factual, no adjectives. Four sentences:
- The chargeback number, the date and the amount.
- What the retailer's system recorded, quoted exactly.
- What your documents show, with the four attachments named.
- What you are asking for: reversal, or a written reason for denial that cites the guide.
A template you can paste
Replace the bracketed fields. Keep it in plain text so the portal does not mangle it.
- Subject: Chargeback [number] — dispute with documents attached
- Body: On [date] chargeback [number] was raised for [amount] on PO [number], recorded as [reason code and text]. Our records show [what happened], evidenced by the attached 824, the corrected [document], the carrier POD and the transmission log showing the send at [time]. Please reverse the charge, or provide the guide reference the decision relied on.
Then fix the cause
A dispute recovers one charge. A rejection log recovers the rest. Track every 824 by code; the code that appears twice is a mapping defect, not bad luck.
- Count chargebacks by cause each month, not by amount.
- Fix the map, not the individual document.
- Keep the raw files for at least a quarter; portals close their windows.
Questions
How long do I have?
It varies by retailer and by portal, commonly 30 to 90 days from the deduction. The window is in the supplier agreement, not in the portal's help text.
What is the success rate?
It depends almost entirely on whether you can produce the raw document and a timestamp. Disputes without them are usually denied.