AI-generated Key Takeaways
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A single operation on a campaign asset can be a create, update, or remove action.
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An
update_maskfield is used in an update operation to determine which resource fields are modified. - 
          
A create operation does not expect a resource name for the new campaign asset.
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An update operation requires the campaign asset to have a valid resource name.
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A remove operation expects a resource name for the campaign asset in a specific format.
 
A single operation (create, update, remove) on a campaign asset.
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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 asset.  | 
              
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                   Update operation: The campaign asset is expected to have a valid resource name.  | 
              
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 Remove operation: A resource name for the removed campaign asset is expected, in this format: 
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