AI-generated Key Takeaways
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          Campaign bid modifiers are bid-modifiable criteria at the campaign level. 
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          The resource name for a campaign bid modifier includes the customer ID, campaign ID, and criterion ID. 
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          Key fields include resource_name,campaign,criterion_id,bid_modifier, andcriterion.
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          The criterioncan be aninteraction_typefor search campaigns.
Represents a bid-modifiable only criterion at the campaign level.
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 Immutable. The resource name of the campaign bid modifier. Campaign bid modifier resource names have the form: 
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 Output only. The campaign to which this criterion belongs. | 
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 Output only. The ID of the criterion to bid modify. This field is ignored for mutates. | 
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 The modifier for the bid when the criterion matches. | 
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 | Immutable. Criterion for interaction type. Only supported for search campaigns. |