Your colleague created a line item in Display & Video 360 for their client's mobile web campaign and targeted mobile in-app by mistake. They went in and removed the mobile in-app targeting at the insertion order level, but the campaign is still targeting mobile in-app. Why could this be happening?

Analysis of Correct Answer(s)

In Display & Video 360, targeting settings follow a hierarchical structure. When a line item is created, it inherits the targeting settings from its parent insertion order (IO) at that specific moment.

• The key principle is that changes made to an IO's targeting are not retroactive. They do not automatically apply to line items that have already been created.
• In this scenario, the line item was created while the IO targeted both mobile web and in-app. The line item inherited and locked in this setting.
• Even though the colleague later removed in-app targeting from the IO, the existing line item retained its original targeting. To fix this, the in-app targeting must be removed directly at the line item level.

Analysis of Incorrect Options

• You can't modify insertion order targeting at the line item level: This is incorrect. You can add more restrictive targeting at the line item level to refine what is inherited from the IO.
• You can't modify targeting once the campaign has line items assigned: This is false. Targeting at all levels (Campaign, IO, Line Item) can be modified at any time, though best practices advise against frequent changes once a campaign is live.
• You can't modify targeting for mobile in-app inventory at the line item level: This is incorrect. Environment targeting, which includes mobile in-app, is a standard and fully editable setting at the line item level.