Attention required order notification failing

[TucsonTom]

I receive multiple emails per day from Google Checkout with the error shown in the subject of this discussion. My ISP can't help, but they say the callback URL I'm using is correct. Any idea about what this error means and how to stop it?

[loren_d_c]

More details on the failure should be in your Google Checkout account, follow the instructions in the Google Checkout error email to find them.

-Loren