AI-generated Key Takeaways
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This describes a single operation (create, update, or remove) that can be performed on a campaign group.
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The
update_maskfield is used to specify which resource fields are modified during an update operation. - 
          
The
operationfield is a union that can contain either acreate,update, orremoveoperation. - 
          
Each operation type (
create,update,remove) has specific requirements regarding the campaign group's resource name. 
A single operation (create, update, remove) on a campaign group.
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                   FieldMask that determines which resource fields are modified in an update.  | 
              
Union field 
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                   Create operation: No resource name is expected for the new campaign group.  | 
              
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                   Update operation: The campaign group is expected to have a valid resource name.  | 
              
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 Remove operation: A resource name for the removed campaign group is expected, in this format: 
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