AI-generated Key Takeaways
- 
          The PreferredDealError is a service error specifically related to preferred deal proposal line items. 
- 
          This error inherits properties from the generic ApiError type. 
- 
          Specific reasons for this error include invalid priority, invalid rate type (only CPM is supported), invalid frequency caps (not supported), invalid roadblock type (only ONE_OR_MORE is supported), and invalid delivery rate type (only FRONTLOADED is supported). 
Errors associated with preferred deal proposal line items.
- Namespace
- 
               https://www.google.com/apis/ads/publisher/v202508
| Field | |
|---|---|
| ApiError(inherited) | |
| 
                            | 
                            The OGNL field path to identify cause of error. | 
| 
                            | A parsed copy of the field path. For example, the field path "operations[1].operand" corresponds to this list: {FieldPathElement(field = "operations", index = 1), FieldPathElement(field = "operand", index = null)}. | 
| 
                            | 
                            The data that caused the error. | 
| 
                            | 
                            A simple string representation of the error and reason. | 
| PreferredDealError | |
| 
                            | The error reason represented by an enum. Enumerations 
 |