[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-06 UTC."],[[["\u003cp\u003eThis page lists common error reasons encountered when using the Google Ad Manager API.\u003c/p\u003e\n"],["\u003cp\u003eEach error reason provides a description of the issue, such as \u003ccode\u003eNOT_FOUND\u003c/code\u003e indicating the requested entity does not exist.\u003c/p\u003e\n"],["\u003cp\u003eThese reasons can help developers troubleshoot and resolve issues when interacting with various Ad Manager services.\u003c/p\u003e\n"],["\u003cp\u003eThe error reasons are organized in an enumeration with a namespace for easy identification and usage within the API.\u003c/p\u003e\n"]]],["The content lists numerous services related to ad management, including `AdRuleService`, `AdjustmentService`, `CreativeService`, `ForecastService`, `OrderService`, and many others. It also details common error reasons within these services. Error reasons include `NOT_FOUND`, `ALREADY_EXISTS`, `CANNOT_UPDATE`, and `CONCURRENT_MODIFICATION`, among others. These reasons help identify issues when interacting with the ad management API. Each service and error are associated with a specific API reference.\n"],null,["# enum CommonError.Reason (v202408)\n\n**Service** \n[AdRuleService](/ad-manager/api/reference/v202408/AdRuleService.CommonError.Reason) [AdjustmentService](/ad-manager/api/reference/v202408/AdjustmentService.CommonError.Reason) [AdsTxtService](/ad-manager/api/reference/v202408/AdsTxtService.CommonError.Reason) [AudienceSegmentService](/ad-manager/api/reference/v202408/AudienceSegmentService.CommonError.Reason) [CdnConfigurationService](/ad-manager/api/reference/v202408/CdnConfigurationService.CommonError.Reason) [CmsMetadataService](/ad-manager/api/reference/v202408/CmsMetadataService.CommonError.Reason) [CompanyService](/ad-manager/api/reference/v202408/CompanyService.CommonError.Reason) [ContactService](/ad-manager/api/reference/v202408/ContactService.CommonError.Reason) [ContentBundleService](/ad-manager/api/reference/v202408/ContentBundleService.CommonError.Reason) [ContentService](/ad-manager/api/reference/v202408/ContentService.CommonError.Reason) [CreativeService](/ad-manager/api/reference/v202408/CreativeService.CommonError.Reason) [CreativeSetService](/ad-manager/api/reference/v202408/CreativeSetService.CommonError.Reason) [CreativeTemplateService](/ad-manager/api/reference/v202408/CreativeTemplateService.CommonError.Reason) [CreativeWrapperService](/ad-manager/api/reference/v202408/CreativeWrapperService.CommonError.Reason) [CustomFieldService](/ad-manager/api/reference/v202408/CustomFieldService.CommonError.Reason) [CustomTargetingService](/ad-manager/api/reference/v202408/CustomTargetingService.CommonError.Reason) [DaiAuthenticationKeyService](/ad-manager/api/reference/v202408/DaiAuthenticationKeyService.CommonError.Reason) [DaiEncodingProfileService](/ad-manager/api/reference/v202408/DaiEncodingProfileService.CommonError.Reason) [ForecastService](/ad-manager/api/reference/v202408/ForecastService.CommonError.Reason) [InventoryService](/ad-manager/api/reference/v202408/InventoryService.CommonError.Reason) [LabelService](/ad-manager/api/reference/v202408/LabelService.CommonError.Reason) [LineItemCreativeAssociationService](/ad-manager/api/reference/v202408/LineItemCreativeAssociationService.CommonError.Reason) [LineItemService](/ad-manager/api/reference/v202408/LineItemService.CommonError.Reason) [LineItemTemplateService](/ad-manager/api/reference/v202408/LineItemTemplateService.CommonError.Reason) [LiveStreamEventService](/ad-manager/api/reference/v202408/LiveStreamEventService.CommonError.Reason) [MobileApplicationService](/ad-manager/api/reference/v202408/MobileApplicationService.CommonError.Reason) [NativeStyleService](/ad-manager/api/reference/v202408/NativeStyleService.CommonError.Reason) [NetworkService](/ad-manager/api/reference/v202408/NetworkService.CommonError.Reason) **OrderService** [PlacementService](/ad-manager/api/reference/v202408/PlacementService.CommonError.Reason) [ProposalLineItemService](/ad-manager/api/reference/v202408/ProposalLineItemService.CommonError.Reason) [ProposalService](/ad-manager/api/reference/v202408/ProposalService.CommonError.Reason) [PublisherQueryLanguageService](/ad-manager/api/reference/v202408/PublisherQueryLanguageService.CommonError.Reason) [ReportService](/ad-manager/api/reference/v202408/ReportService.CommonError.Reason) [SegmentPopulationService](/ad-manager/api/reference/v202408/SegmentPopulationService.CommonError.Reason) [SiteService](/ad-manager/api/reference/v202408/SiteService.CommonError.Reason) [StreamActivityMonitorService](/ad-manager/api/reference/v202408/StreamActivityMonitorService.CommonError.Reason) [SuggestedAdUnitService](/ad-manager/api/reference/v202408/SuggestedAdUnitService.CommonError.Reason) [TargetingPresetService](/ad-manager/api/reference/v202408/TargetingPresetService.CommonError.Reason) [TeamService](/ad-manager/api/reference/v202408/TeamService.CommonError.Reason) [UserService](/ad-manager/api/reference/v202408/UserService.CommonError.Reason) [UserTeamAssociationService](/ad-manager/api/reference/v202408/UserTeamAssociationService.CommonError.Reason) [YieldGroupService](/ad-manager/api/reference/v202408/YieldGroupService.CommonError.Reason) **Dependencies** \n[CommonError](/ad-manager/api/reference/v202408/OrderService.CommonError) \n▼\n**CommonError.Reason**\n\nDescribes reasons for common errors\n\n*** ** * ** ***\n\nNamespace\n:\n `https://www.google.com/apis/ads/publisher/v202408`\n\n| Enumeration | Description |\n|---------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------|\n| `NOT_FOUND` | Indicates that an attempt was made to retrieve an entity that does not exist. |\n| `ALREADY_EXISTS` | Indicates that an attempt was made to create an entity that already exists. |\n| `NOT_APPLICABLE` | Indicates that a value is not applicable for given use case. |\n| `DUPLICATE_OBJECT` | Indicates that two elements in the collection were identical. |\n| `CANNOT_UPDATE` | Indicates that an attempt was made to change an immutable field. |\n| `UNSUPPORTED_OPERATION` | Indicates that the requested operation is not supported. |\n| `CONCURRENT_MODIFICATION` | Indicates that another request attempted to update the same data in the same network at about the same time. Please wait and try the request again. |\n| `UNKNOWN` | The value returned if the actual value is not exposed by the requested API version. |"]]