Google announced they've added a new diagnostics tab in the Google Merchant Center that provides consolidated issue reporting for your feeds and items. This tab now replaces the Data Quality tab but aims at improving the troubleshooting efforts of your feeds and items.
Other features added include:
- A historic overview of item eligibility status to spot and investigate changes that have caused recent item disapprovals
- A downloadable report containing all affected items and the reasons for disapprovals
- Traffic and impact metrics to help you identify how many items are currently impacted by specific issues
Here is a screen shot of the new tab:
So far, no one seems to be commenting much on this new feature.
Forum discussion at Google AdWords Help.