Conflicts indicate tasks that are assigned at a time the user is not available to work.
When a user has a task conflict it will show in Planner by turning the Day Details red on that day. Conflicts are caused by assigning a task on unavailable time (gray background) or on Partial Available time where that task is not available (striped background).
When reviewing AFK requests, a red label will show conflicts what would be caused by approving the request. Hover your mouse over the label to see the conflicting tasks. These conflicts will not show in Planner until the AFK is approved.
Last Minute AFK
Since Last Minute AFK is auto-approved, conflicts will appear in Planner as soon as a request is submitted, as well as in Manage AFK.