Explanations expands to Target CPA campaigns on Search
https://support.google.comGoogle is expanding explanations to Search campaigns that use Target CPA. With explanations, you can view the reasons for performance change in a single click, so you can spend less time investigating and more time on optimization.
With this update, you can view the reason for significant changes in cost and conversions for Search campaigns using Target CPA. For example, explanations can tell you if your campaign or ad group performance was impacted by changes to target CPA, bid limits, budget and more.