Tutorial Step 16: Resolve Violations
If there are any logical inconsistencies in your schedule, they are marked with red icons 
in your task outline and in the status bar at the bottom of the window. Click one of them to see the Violations window, which explains what the problems are and how to fix them.
in your task outline and in the status bar at the bottom of the window. Click one of them to see the Violations window, which explains what the problems are and how to fix them. Try creating a circular dependency in which two tasks both depend on each other. Because this is logically impossible, you should see a violation icon which you can click to resolve the problem.