If there are any warnings associated with an element you select in a drawing, the respective Modify tab for the element displays a Warning panel with a Show Related Warnings tool. You can click this tool to view a list of the related warnings. These warnings are listed in the Messages panel on the Autodesk Revit 2014 dialog. The following graphic displays a list of warnings.
The Messages dialog lists warnings in a tree view that you can expand to see the individual elements associated with each warning. When you select the text next to a warning, the element highlights in all open views where it is visible.
To delete an element from the model, select the check box next to an element name, and click Delete Checked.