Square: Voice Failure

What This Means

The error "VOICE_FAILURE" indicates that the card issuer declined the request because the issuer requires voice authorization from the cardholder (as said by Square).

Suggested Next Steps

Check the customer's information in your payment gateway to determine if the payment simply needs to be updated or retried (see "After Resolving the Issue" below).
Contact your customer and have them either choose to contact their bank or use a different payment method by adding a new one.
You may also choose to update the customer's payment method manually by adding a new payment method for them. See "Adding a New Payment Method for Your Customer" for more details.
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 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.