Ad sets in one campaign target the same people

Ad sets chasing the same people compete in the same auctions and split the learning between them.

Fires when: Live ad sets in a campaign share a custom audience, or the same targeting, and exclude nothing.
What to do: Add exclusions, or merge them.
How the impact is estimated: Not quantified: Meta no longer reports overlap between audiences, so this reads the targeting itself.
Platform: Meta
Severity: low
Looks back: The current setup
Autopilot: Never applied automatically.