AI-generated Key Takeaways
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The content lists various Ad Manager API services with links to their
StringFormatError.Reasondocumentation for version v202508. - 
          
The
StringFormatError.Reasonenumeration defines reasons for target errors in string values, includingUNKNOWN,ILLEGAL_CHARS, andINVALID_FORMAT. - 
          
ILLEGAL_CHARSindicates the input string contains disallowed characters, whileINVALID_FORMATmeans the string value is invalid for its associated field. 
The reasons for the target error.
- Namespace
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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. |