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Fields from the above resources may be selected along with this
resource in your SELECT and WHERE clauses. These fields will not segment
metrics in your SELECT clause.
ad_group_bid_modifier.bid_modifier
Field description
The modifier for the bid when the criterion matches. The modifier must be in the range: 0.1 - 10.0. The range is 1.0 - 6.0 for PreferredContent. Use 0 to opt out of a Device type.
The resource name of the ad group bid modifier. Ad group bid modifier resource names have the form: customers/{customer_id}/adGroupBidModifiers/{ad_group_id}~{criterion_id}