AI-generated Key Takeaways
- 
          The document provides a list of possible errors related to final URL expansion asset views. 
- 
          Errors include missing or invalid required filters, and issues with selecting or filtering by ad groups or asset groups. 
- 
          Some fields or resources require filtering by a single resource. 
- 
          Selecting or filtering by both ad group and asset group simultaneously is not allowed. 
Enum describing possible final url expansion asset view errors.
| Enums | |
|---|---|
| 
 | Name unspecified. | 
| 
 | The received error code is not known in this version. | 
| 
 | At least one required filter has to be applied in the query. | 
| 
 | Advertising channel type filter is required. | 
| 
 | Advertising channel type filter has an invalid value. | 
| 
 | Asset group cannot be selected in the query. | 
| 
 | Ad group cannot be selected in the query. | 
| 
 | A selected field/resource requires filtering by a single resource. | 
| 
 | Both ad group and asset group cannot be selected in the query. | 
| 
 | Both ad group and asset group cannot be filtered in the query. |