AI-generated Key Takeaways
- 
          The content provides a list of various service links related to Ad Manager API and their associated ApiVersionError.Reason documentation. 
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          The ApiVersionError.Reason namespace is https://www.google.com/apis/ads/publisher/v202508.
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          The enumeration UPDATE_TO_NEWER_VERSIONindicates an operation is not allowed in the current API version.
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          The enumeration UNKNOWNsignifies that the actual value is not available in the requested API version.
- Namespace
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               https://www.google.com/apis/ads/publisher/v202508
| Enumeration | Description | 
|---|---|
| UPDATE_TO_NEWER_VERSION | Indicates that the operation is not allowed in the version the request was made in. | 
| UNKNOWN | The value returned if the actual value is not exposed by the requested API version. |