All Cybersource codes
CYBERSOURCE · REASON CODE

Cybersource
104

The merchant reference code matches another authorization request sent within the past 15 minutes.

Cybersource saysIntegration issue
104

The merchant reference code matches another authorization request sent within the past 15 minutes.

What it means

Duplicate transaction

An identical payment was sent very recently, so this one was blocked.

What to do

Confirm whether the first one succeeded before sending again, and use unique order references.

Don't retry as-isWho can fix it: You, the merchant
Yuno response codeDUPLICATED_TRANSACTION
Source:Cybersource docs — Reason Codes for the Simple Order API

Other Cybersource codes with the same meaning

105

Reference only. Codes and descriptions come from each provider's public documentation. The Yuno response code is a reference mapping and does not guarantee how a specific transaction is processed.