Fatigue report will list all the ads which are likely to be fatigued based on the level of fatigue along with the reason. You can also refer to "Days until fatigue" to know when it's likely to be fatigued and number of days it has been active.
Fatigue Settings
You can customise the criteria to look at the fatigue report by selecting comparison period and fatigue conditions.
Select Comparison Period: Daily or Weekly
Fatigue Conditions: Define the metric which would be increase/decrease and by how much to classify them into Mid or High Fatigue. Any of the two conditions needs to be met for a particular criteria to be classified as fatigued.
