AI-generated Key Takeaways
- 
          The page provides a list of various Ad Manager API services, including links to their documentation. 
- 
          It specifically details the StringFormatError.Reasonenumeration and its possible values:UNKNOWN,ILLEGAL_CHARS, andINVALID_FORMAT.
- 
          The StringFormatError.Reasonenumeration indicates the specific reason why a string format error occurred.
The reasons for the target error.
- Namespace
- 
               https://www.google.com/apis/ads/publisher/v202508
| Enumeration | Description | 
|---|---|
| UNKNOWN | |
| ILLEGAL_CHARS | The input string value contains disallowed characters. | 
| INVALID_FORMAT | The input string value is invalid for the associated field. |