Google Checkout for 1.4.8b

We've made several unsuccessful attempts to send order notifications to your notification callback URL,

<?xml version="1.0" encoding="UTF-8"?><notification-acknowledgment xmlns="http://checkout.google.com/schema/2"/>

<?xml version="1.0" encoding="UTF-8"?>
<new-order-notification xmlns="http://checkout.google.com/schema/2" serial-number="556{omitted by poster}">
  <buyer-billing-address>
    <email>W {etc.}

Require notification acknowledgments to specify the serial number of the notification.

Best4Men wrote:Somewhat curious if anyone else is having issues with this.

I did some more testing with the sandbox, and determined the only way to get rid of this error is to drop the API version down to 2.2.

I noticed version 2.3 says the following in the changelog:

Require notification acknowledgments to specify the serial number of the notification.

I looked through the code that appears to be doing the acknowledgement, and it doesn't contain the word "Serial" in there at all, nor do any of the files in the system/google/library directory.

I figured that if the module WAS actually answering back with the serial number, the variable might be called "Serial" or something.

Also, are these orders going to show up at all in the "Orders" section of Open Cart at all? Or is ALL order tracking forever done on Google, and opencart doesn't know anything about the order placed?

When i enable google checkout and open my storefront the only thing i see is this error

netpox wrote:I am having the same exact error. I keep getting the message from google:

We've made several unsuccessful attempts to send order notifications to your notification callback URL, https://www.mywebsite.com/index.php?rou ... t/callback As a result, you aren't receiving order status, risk, or other notifications.