AI-generated Key Takeaways
- 
          The content lists various Ad Manager API services with links to their StringFormatError documentation. 
- 
          It details the StringFormatError.Reason enumeration, outlining possible reasons for string format errors. 
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          The reasons for string format errors include unknown issues, illegal characters, and invalid format for the associated field. 
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. |