Root Cause

• Misconfigured payment method: The payment method was not correctly set up or activated in the gateway or merchant account.

• Deleted or archived method: The selected payment method was removed, expired, or no longer available.

• Gateway-side restrictions: The payment processor may have temporarily or permanently disabled the method.

• Mapping or routing issues: Incorrect linking of the payment method in the merchant's integration or gateway configuration.

Troubleshooting and Solutions

• Inform the customer that their selected payment method is currently unavailable.

• Ask the customer to:

  • Try a different payment method.

  • Contact support if they believe the selected method should be active.

  • Process an offline refund (e.g., bank transfer) outside the payment gateway.

• Internally:

  • Verify that all configured payment methods are correctly set up in your gateway.

  • Contact your payment gateway provider if the method is unexpectedly unavailable.