It would be very helpful for us to get in contact via phone or chat with a direct Adwords Technical support to review these issues.
We are experiencing the follow two errors:
Ad Approval Error
Our test ad is using the Ad Customizer feature, drawing its data from a feed output the we designed; title "Feed2". The ad was working, showing the variable data drawn from the feed, for a week. Last week the ad began to show an error despite not having changed any of the text, settings, or the feed related to the ad.
When we refresh the page sometimes the error changes, but for the most part we are receiving the following message,
"Your ad can't show because its parameters couldn't be filled in. Make sure to check that you have matching values that fit within the character limits."
We can provide more detailed information and screen shots via email to help as well. We've tried changing the text to make it shorter, re-uploading and re-submitting the feed (which was approved again), as well as adjusting a few of the campaign settings, but have had so success at getting the Ad Customizer Ads working with the feed again.
Google Feed Error
Shared Library > Business Data
Feed Name: 'GFeed'
When we uploaded the Google Template Feed Spreadsheet it wouldn't take the data for the first couple of weeks working with the Ad Customizer feed; we received a message that read "Unknown Error". In it's place we used a Spreadsheet that pulled the data from a custom script we designed, which worked. About a week later, without any change to the document or the settings, we attempted to upload the spreadsheet again while trouble shooting the above mentioned error and it was approved. However, we still receive the same errors in the Ad Campaign.
Really appreciate any help.