AI-generated Key Takeaways
- 
          This document lists various Ad Manager services with links to their PermissionError.Reason documentation. 
- 
          The core content focuses on the PermissionError.Reasonenumeration.
- 
          PermissionError.Reasondescribes why permission errors occur within the Ad Manager API.
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          The two specific reasons listed are PERMISSION_DENIEDandUNKNOWN.
Describes reasons for permission errors.
- Namespace
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               https://www.google.com/apis/ads/publisher/v202508
| Enumeration | Description | 
|---|---|
| PERMISSION_DENIED | User does not have the required permission for the request. | 
| UNKNOWN | The value returned if the actual value is not exposed by the requested API version. |