Conflicts inform you of scheduling issues. For example, you might have a Workspace or Mechanic double booked, or a part that was ordered for a Job may be scheduled to be delivered after work starts on the Job.
Click on the Conflicts icon at the top right hand side of the screen
This displays a list of Conflicts
You can ignore one conflict by clicking on the cross
You can navigate to the cause of the conflict by clicking on the arrow
You can click on Ignore All to ignore all listed Conflicts