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declined (card declined by issuer - contact card issuer to determine reason.)

We developed an online payment website and used the API provided by Authorize.net to test the credit card payment in Sandbox. The payment can be successfully paid normally.

However, after changing the merchant account and changing the API Login ID and Transaction Key in the production environment, ACH payment was successful, the credit card payment failed. Authorize.net replied with the message "declined (card declined by issuer - contact card issuer to determine reason.)". In fact, the credit card we used for payment is normal.

Does anyone know how to fix it?

chesterr0513
Member
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