Max CPA column
Displays the maximum cost-per-action amount that you are willing to pay for a biddable item that is managed by a bid strategy with the goal of maximizing conversions (CPA) goal. The max CPA keeps each high bid within a profitable range.
The amount of the max CPA is higher than the target CPA amount. To keep bids in a profitable range but not overly constrain a bid strategy, we recommend that the max CPA be at least 1.5 times the target CPA.
You can use this column in a formula column by specifying the