AI-generated Key Takeaways
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The ad group bid modifier represents a modification to bids for a specific criterion within an ad group.
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Each ad group bid modifier has a unique resource name identifying the customer, ad group, and criterion.
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The bid modifier value must be within the range of 0.1 to 10.0, with a specific range of 1.0 to 6.0 for PreferredContent, and 0 can be used to opt out of a Device type.
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The criterion for an ad group bid modifier can include various types, such as hotel date selection, advance booking window, length of stay, check-in day, device, and check-in date range.
 
Represents an ad group bid modifier.
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 Immutable. The resource name of the ad group bid modifier. Ad group bid modifier resource names have the form: 
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                   Output only. Bid modifier source.  | 
              
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 Immutable. The ad group 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. 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.  | 
              
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 Output only. The base ad group from which this draft/trial adgroup bid modifier was created. If ad_group is a base ad group then this field will be equal to ad_group. If the ad group was created in the draft or trial and has no corresponding base ad group, then this field will be null. This field is readonly.  | 
              
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                   Immutable. Criterion for hotel date selection (default dates versus user selected).  | 
              
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                   Immutable. Criterion for number of days prior to the stay the booking is being made.  | 
              
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                   Immutable. Criterion for length of hotel stay in nights.  | 
              
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                   Immutable. Criterion for day of the week the booking is for.  | 
              
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                   Immutable. A device criterion.  | 
              
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                   Immutable. Criterion for a hotel check-in date range.  |