The payment request failed due to Square's servers being unavailable (contact Square for more details). You will need to log in to your payment gateway to verify if a payment has been processed successfully or not.
For more information, you can contact Square support directly: https://squareup.com/help/us/en/
This error is likely due to the Square servers being down either temporarily for maintenance or another issue. You will need to contact Square for more information.
To avoid a duplicate transaction, first, check within your Square gateway for a processed payment for this Scheduled Order using the GatewayCustomerID.
Updated about 1 year ago