Square: The Card Is Not Supported Either In The Geographic Region Or By The Merchant Category Code

What This Means

The card is not supported either in the geographic region or by the MCC merchant category code.

Common Causes For This Error

The card used for the payment is not allowed to be used in the region provided.

Suggested Next Steps

Change the card used for this payment for a valid one for the region.
Contact the customer to have them add a new payment method and add it to their Scheduled Order.
Once a new payment method is added to the Scheduled Order, the Scheduled Order should be processed with the new payment method.

Adding A New Payment Method for Your Customer?

If you are adding a new payment method for your customer directly to your payment gateway (manually), ensure that you edit the failed Scheduled Order, add a new payment method, and copy the required billing information from your payment gateway directly to their Scheduled Order including:

Gateway CustomerId
Gateway PaymentId
Billing Address
Payment Method Description (optional, but strongly suggested because it is used to display the payment method to your customer)

After Resolving The Issue

Once this issue is resolved, you should use the action to Restart Processing the Failed Scheduled Order.