American Express Reason Code P23

What is

American Express Reason Code P23

?

The transaction was processed in a different currency than the cardmember agreed to.

Why this happens

A currency-conversion or checkout configuration error charged in the wrong currency.

What this means for each merchant

Relevant to international sellers — checkout records showing displayed currency are the defense.

Evidence that typicalls wins this

Checkout record showing the currency displayed and agreed to by the customer.

How to fight it

Submit checkout records showing the currency the customer actually saw and confirmed.

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Common mistakes

Not keeping records of which currency was shown at checkout.

How to prevent it

Lock settlement currency to match whatever's displayed at checkout.

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