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If a merchant opts out of the new agreement with American Express or falls into a restricted business category and does not make the necessary changes to the checkout flow, what will occur?

April 26, 2017Agreement American Business category Express falls merchant opts

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If a merchant opts out of the new agreement with American Express or falls into a restricted business category and does not make the necessary changes to the checkout flow, what will occur?

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When this merchant’s customers try to make a purchase using American Express, their transaction will be declined. Depending on their integration, they will get the following messages: • API Integration: 10566 / Short Message: Credit card type unsupported / Long Message: The credit card type is not supported.