Note: Adtriba Sphere is a legacy feature that we continue to support but no longer sell. The latest version of this feature is available as Funnel Measurement.
If you are already using Funnel Measurement, find more information here. To upgrade, contact us.
This effect can be seen if there is no better alternative to shift your budget to.
Especially when the marginal CPAs in the other sources are higher than in the respecting source, it still doesn’t make sense to shift the budget.