You created a line item in a Display&Video 360 mobile web campaign that accidentally targets mobile in-app.You remove that mobile in-app targeting at the insertion order level, yet the campaign in continuing to target mobile-inapp.What's the issue here?

In the context of Display&Video360,if a line item is created with targeting settings at the insertion order level, attempting to modify those settings at the insertion order level will not impact existing line item targeting.The targeting settings at the line item level,onceset,generally cannot be modified retroactively at the insertion order level.Therefore,if there was an accidental targeting of mobile in-app at the line item level,removing it at the insertion order level would not rectify the situation.This limitation ensures that changes made at higher levels in the hierarchy do not unintentionally impact the configurations at lower levels,providing a clear structure for campaign management in Display&Video360.