When a registration is in Auto-Recertification, there is an Error Report available throughout the registration.  This is in the lower left corner within the registration process.

When you select to view the Error Report on the registration, you will receive detailed information about the issue.

You can close the information view by clicking anywhere on the screen in the background or using the cancel option on the view.  

Since this is available throughout the registration process, you can review this anytime.  As you address the issues on the error report, they will remove from the view and the view is updated.  Once all issues are addressed, you may accept the data entry and submit the registration for assessment.