BidModifier field in Criteria Performance Report

[GD]

Hi,

I'm trying to get mobile modifiers via the CRITERIA_PERFORMANCE_REPORT. However, the result is always empty. Maybe I'm misunderstanding the purpose of the BidModifier field in this report?

"SELECT CampaignId, AdGroupId, Id, CpcBid, FirstPageCpc, TopOfPageCpc, QualityScore, BidModifier, CriteriaType, Criteria FROM CRITERIA_PERFORMANCE_REPORT WHERE CriteriaType = 'MOBILE_DEVICE' DURING 20150615,20150615"

Yields an empty result for an account that contains mobile modifiers.

[Umesh Dengale]

Hello,

The CRITERIA_PERFORMANCE_REPORT is a Single attribution report. This means for every impression, AdWords will pick *one* criterion that is the most relevant criterion for that impression, and show it in the report. Even though you have a MOBILE_DEVICE criteria, that probably is not the most relevant criteria that triggered the Ad, hence it doesn't show up in that report.

Thanks,

Umesh, AdWords API Team.