What do I do if there I get an email saying "Data feed upload failure"?

You may occasionally receive an email from Google Base with subject, Google Base data feed file status on "file.txt": Data feed upload failure. You receive it even though you have not changed any feed settings and your feed has been working correctly. In your Google Base dashboard, you will see the following status message:

Outcome: Data feed upload failed. No items are live.   help
Number of items processed:              0
Number of inserted items:               0
Uploaded at:  Oct 19, 2008 1:40 am PDT
Processed at: Oct 19, 2008 10:11 am PDT

There would be no further details on the error message, and our system would show 'success' in the task history. This problem is usually due to a system error at Google Base. To resolve the issue, you simply have to resubmit your feed from your account.

For further information, you can view the following post in the 'Google Groups - Submitting Data Forum': Data Feed Upload Failure.