AI-generated Key Takeaways
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channel_configis an output-only field reflecting which field in thechannel_configurationunion is populated. - 
          
channel_configurationis a union field allowing for one of the different channel control configuration options. - 
          
channel_strategyis a high-level channel strategy field. - 
          
selected_channelsallows for explicitly selected channels and must have at least one true value when present. 
Channel controls for Demand Gen ad groups.
| Fields | |
|---|---|
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                   Output only. Channel configuration reflecting which field in the oneof is populated.  | 
              
Union field 
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                   High level channel strategy.  | 
              
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                   Explicitly selected channels. This field should be set with at least one true value when present.  |