Mastercard Reason Code 4857

What is

Mastercard Reason Code 4857

?

A dispute specific to digital goods or services (downloads, subscriptions, access) not being delivered or usable.

Why this happens

The customer says the digital product, download, or access they paid for didn't work or wasn't delivered.

What this means for each merchant

Access logs are your real evidence here — proving delivery/access isn't the same as proving a physical shipment.

Evidence that typicalls wins this

Access/download logs, account activity showing the product was delivered and usable, and license/key issuance records.

How to fight it

Submit access or download logs tied to the customer's account and the specific purchase.

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Common mistakes

Not logging digital delivery events (download timestamp, access grant) the way physical shipping is tracked.

How to prevent it

Log every digital delivery event (key issuance, download, access grant) the same way you'd log a physical shipment.

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