[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-06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."],[],["The core content outlines various services within an ad management platform, including AdRule, Adjustment, AdsTxt, AudienceSegment, and many others. These services cover areas like creative management, inventory, forecasting, targeting, and reporting. Additionally, it details dependencies related to `RequiredCollectionError`, specifying potential issues such as missing, too large, or too small collections, and an unknown error. These error types have an enumeration.\n"],null,["# enum RequiredCollectionError.Reason (v202502)\n\n**Service** \n[AdRuleService](/ad-manager/api/reference/v202502/AdRuleService.RequiredCollectionError.Reason) [AdjustmentService](/ad-manager/api/reference/v202502/AdjustmentService.RequiredCollectionError.Reason) [AdsTxtService](/ad-manager/api/reference/v202502/AdsTxtService.RequiredCollectionError.Reason) [AudienceSegmentService](/ad-manager/api/reference/v202502/AudienceSegmentService.RequiredCollectionError.Reason) [CdnConfigurationService](/ad-manager/api/reference/v202502/CdnConfigurationService.RequiredCollectionError.Reason) [CmsMetadataService](/ad-manager/api/reference/v202502/CmsMetadataService.RequiredCollectionError.Reason) [CompanyService](/ad-manager/api/reference/v202502/CompanyService.RequiredCollectionError.Reason) [ContactService](/ad-manager/api/reference/v202502/ContactService.RequiredCollectionError.Reason) [ContentBundleService](/ad-manager/api/reference/v202502/ContentBundleService.RequiredCollectionError.Reason) [ContentService](/ad-manager/api/reference/v202502/ContentService.RequiredCollectionError.Reason) [CreativeService](/ad-manager/api/reference/v202502/CreativeService.RequiredCollectionError.Reason) [CreativeSetService](/ad-manager/api/reference/v202502/CreativeSetService.RequiredCollectionError.Reason) [CreativeTemplateService](/ad-manager/api/reference/v202502/CreativeTemplateService.RequiredCollectionError.Reason) [CreativeWrapperService](/ad-manager/api/reference/v202502/CreativeWrapperService.RequiredCollectionError.Reason) [CustomFieldService](/ad-manager/api/reference/v202502/CustomFieldService.RequiredCollectionError.Reason) [CustomTargetingService](/ad-manager/api/reference/v202502/CustomTargetingService.RequiredCollectionError.Reason) [DaiAuthenticationKeyService](/ad-manager/api/reference/v202502/DaiAuthenticationKeyService.RequiredCollectionError.Reason) [DaiEncodingProfileService](/ad-manager/api/reference/v202502/DaiEncodingProfileService.RequiredCollectionError.Reason) [ForecastService](/ad-manager/api/reference/v202502/ForecastService.RequiredCollectionError.Reason) [InventoryService](/ad-manager/api/reference/v202502/InventoryService.RequiredCollectionError.Reason) [LabelService](/ad-manager/api/reference/v202502/LabelService.RequiredCollectionError.Reason) [LineItemCreativeAssociationService](/ad-manager/api/reference/v202502/LineItemCreativeAssociationService.RequiredCollectionError.Reason) [LineItemService](/ad-manager/api/reference/v202502/LineItemService.RequiredCollectionError.Reason) [LineItemTemplateService](/ad-manager/api/reference/v202502/LineItemTemplateService.RequiredCollectionError.Reason) [LiveStreamEventService](/ad-manager/api/reference/v202502/LiveStreamEventService.RequiredCollectionError.Reason) [MobileApplicationService](/ad-manager/api/reference/v202502/MobileApplicationService.RequiredCollectionError.Reason) [NativeStyleService](/ad-manager/api/reference/v202502/NativeStyleService.RequiredCollectionError.Reason) [NetworkService](/ad-manager/api/reference/v202502/NetworkService.RequiredCollectionError.Reason) [OrderService](/ad-manager/api/reference/v202502/OrderService.RequiredCollectionError.Reason) **PlacementService** [ProposalLineItemService](/ad-manager/api/reference/v202502/ProposalLineItemService.RequiredCollectionError.Reason) [ProposalService](/ad-manager/api/reference/v202502/ProposalService.RequiredCollectionError.Reason) [PublisherQueryLanguageService](/ad-manager/api/reference/v202502/PublisherQueryLanguageService.RequiredCollectionError.Reason) [ReportService](/ad-manager/api/reference/v202502/ReportService.RequiredCollectionError.Reason) [SegmentPopulationService](/ad-manager/api/reference/v202502/SegmentPopulationService.RequiredCollectionError.Reason) [SiteService](/ad-manager/api/reference/v202502/SiteService.RequiredCollectionError.Reason) [StreamActivityMonitorService](/ad-manager/api/reference/v202502/StreamActivityMonitorService.RequiredCollectionError.Reason) [SuggestedAdUnitService](/ad-manager/api/reference/v202502/SuggestedAdUnitService.RequiredCollectionError.Reason) [TargetingPresetService](/ad-manager/api/reference/v202502/TargetingPresetService.RequiredCollectionError.Reason) [TeamService](/ad-manager/api/reference/v202502/TeamService.RequiredCollectionError.Reason) [UserService](/ad-manager/api/reference/v202502/UserService.RequiredCollectionError.Reason) [UserTeamAssociationService](/ad-manager/api/reference/v202502/UserTeamAssociationService.RequiredCollectionError.Reason) [YieldGroupService](/ad-manager/api/reference/v202502/YieldGroupService.RequiredCollectionError.Reason) **Dependencies** \n[RequiredCollectionError](/ad-manager/api/reference/v202502/PlacementService.RequiredCollectionError) \n▼\n**RequiredCollectionError.Reason**\n\n*** ** * ** ***\n\nNamespace\n:\n `https://www.google.com/apis/ads/publisher/v202502`\n\n| Enumeration | Description |\n|-------------|-------------------------------------------------------------------------------------|\n| `REQUIRED` | A required collection is missing. |\n| `TOO_LARGE` | Collection size is too large. |\n| `TOO_SMALL` | Collection size is too small. |\n| `UNKNOWN` | The value returned if the actual value is not exposed by the requested API version. |"]]