AI-generated Key Takeaways
- 
          This operation performs a single create or update on a remarketing action. 
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          The update_maskfield specifies which resource fields are modified during an update operation.
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          The operationfield is a union that defines whether the operation is acreateor anupdate.
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          A createoperation does not require a resource name for the new remarketing action, while anupdateoperation requires a valid resource name for the existing remarketing action.
A single operation (create, update) on a remarketing action.
| Fields | |
|---|---|
| 
 | FieldMask that determines which resource fields are modified in an update. | 
| Union field 
 | |
| 
 | Create operation: No resource name is expected for the new remarketing action. | 
| 
 | Update operation: The remarketing action is expected to have a valid resource name. |