AI-generated Key Takeaways
- 
          AuthenticationError.Reason is an enumeration within the specified namespace. 
- 
          It lists various reasons for authentication failures related to API requests. 
- 
          Reasons include invalid credentials, missing headers, network issues, and account status problems. 
                  Service
               
               
                  AdRuleService
                  AdjustmentService
                  AdsTxtService
                  AudienceSegmentService
                  CdnConfigurationService
                  CmsMetadataService
                  CompanyService
                  ContactService
                  ContentBundleService
                  ContentService
                  CreativeService
                  CreativeSetService
                  CreativeTemplateService
                  CreativeWrapperService
                  CustomFieldService
                  CustomTargetingService
                  DaiAuthenticationKeyService
                  DaiEncodingProfileService
                  ForecastService
                  InventoryService
                  LabelService
                  LineItemCreativeAssociationService
                  LineItemService
                  LineItemTemplateService
                  LiveStreamEventService
                  MobileApplicationService
                  NativeStyleService
                  NetworkService
                  OrderService
                  PlacementService
                  ProposalLineItemService
                  ProposalService
                  PublisherQueryLanguageService
                  ReportService
                  SegmentPopulationService
                  SiteService
                  StreamActivityMonitorService
                  SuggestedAdUnitService
                  TargetingPresetService
                  TeamService
                  UserService
                  UserTeamAssociationService
                  YieldGroupService
               
            
                  Dependencies
               
               
                  AuthenticationError
                  
            ▼
                  AuthenticationError.Reason
               - Namespace
- 
               https://www.google.com/apis/ads/publisher/v202508
| Enumeration | Description | 
|---|---|
| AMBIGUOUS_SOAP_REQUEST_HEADER | The SOAP message contains a request header with an ambiguous definition of the authentication
                header fields. This means either the authTokenandoAuthTokenfields were
                both null or both were specified. Exactly one value should be specified with each request. | 
| INVALID_EMAIL | The login provided is invalid. | 
| AUTHENTICATION_FAILED | Tried to authenticate with provided information, but failed. | 
| INVALID_OAUTH_SIGNATURE | The OAuth provided is invalid. | 
| INVALID_SERVICE | The specified service to use was not recognized. | 
| MISSING_SOAP_REQUEST_HEADER | The SOAP message is missing a request header with an authTokenand optionalnetworkCode. | 
| MISSING_AUTHENTICATION_HTTP_HEADER | The HTTP request is missing a request header with an authToken | 
| MISSING_AUTHENTICATION | The request is missing an authToken | 
| NETWORK_API_ACCESS_DISABLED | The network does not have API access enabled. | 
| NO_NETWORKS_TO_ACCESS | The user is not associated with any network. | 
| NETWORK_NOT_FOUND | No network for the given networkCodewas found. | 
| NETWORK_CODE_REQUIRED | The user has access to more than one network, but did not provide a networkCode. | 
| CONNECTION_ERROR | An error happened on the server side during connection to authentication service. | 
| GOOGLE_ACCOUNT_ALREADY_ASSOCIATED_WITH_NETWORK | The user tried to create a test network using an account that already is associated with a network. | 
| UNDER_INVESTIGATION | The account is blocked and under investigation by the collections team. Please contact Google for more information. | 
| UNKNOWN | The value returned if the actual value is not exposed by the requested API version. |