A problem was found with the geometry of a feature with the Object ID stated in the message. For a list of the geometry problems, as well as a more detailed description of each problem, see the documentation for the Check Geometry tool.
Problems with feature geometry should be fixed immediately as they can cause incorrect results from analysis, as well as unexpected software behavior. To correct geometry problems, run the Repair Geometry tool on the feature class. For alternative ways to fix geometry problems, consult the Check Geometry tool's documentation.