[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-13 UTC."],[],[],null,["# enum RequiredCollectionError.Reason (v202508)\n\n**Service** \n[AdRuleService](/ad-manager/api/reference/v202508/AdRuleService.RequiredCollectionError.Reason) [AdjustmentService](/ad-manager/api/reference/v202508/AdjustmentService.RequiredCollectionError.Reason) [AdsTxtService](/ad-manager/api/reference/v202508/AdsTxtService.RequiredCollectionError.Reason) [AudienceSegmentService](/ad-manager/api/reference/v202508/AudienceSegmentService.RequiredCollectionError.Reason) [CdnConfigurationService](/ad-manager/api/reference/v202508/CdnConfigurationService.RequiredCollectionError.Reason) [CmsMetadataService](/ad-manager/api/reference/v202508/CmsMetadataService.RequiredCollectionError.Reason) [CompanyService](/ad-manager/api/reference/v202508/CompanyService.RequiredCollectionError.Reason) [ContactService](/ad-manager/api/reference/v202508/ContactService.RequiredCollectionError.Reason) [ContentBundleService](/ad-manager/api/reference/v202508/ContentBundleService.RequiredCollectionError.Reason) [ContentService](/ad-manager/api/reference/v202508/ContentService.RequiredCollectionError.Reason) [CreativeService](/ad-manager/api/reference/v202508/CreativeService.RequiredCollectionError.Reason) [CreativeSetService](/ad-manager/api/reference/v202508/CreativeSetService.RequiredCollectionError.Reason) [CreativeTemplateService](/ad-manager/api/reference/v202508/CreativeTemplateService.RequiredCollectionError.Reason) [CreativeWrapperService](/ad-manager/api/reference/v202508/CreativeWrapperService.RequiredCollectionError.Reason) [CustomFieldService](/ad-manager/api/reference/v202508/CustomFieldService.RequiredCollectionError.Reason) [CustomTargetingService](/ad-manager/api/reference/v202508/CustomTargetingService.RequiredCollectionError.Reason) [DaiAuthenticationKeyService](/ad-manager/api/reference/v202508/DaiAuthenticationKeyService.RequiredCollectionError.Reason) [DaiEncodingProfileService](/ad-manager/api/reference/v202508/DaiEncodingProfileService.RequiredCollectionError.Reason) [ForecastService](/ad-manager/api/reference/v202508/ForecastService.RequiredCollectionError.Reason) [InventoryService](/ad-manager/api/reference/v202508/InventoryService.RequiredCollectionError.Reason) [LabelService](/ad-manager/api/reference/v202508/LabelService.RequiredCollectionError.Reason) [LineItemCreativeAssociationService](/ad-manager/api/reference/v202508/LineItemCreativeAssociationService.RequiredCollectionError.Reason) [LineItemService](/ad-manager/api/reference/v202508/LineItemService.RequiredCollectionError.Reason) [LineItemTemplateService](/ad-manager/api/reference/v202508/LineItemTemplateService.RequiredCollectionError.Reason) [LiveStreamEventService](/ad-manager/api/reference/v202508/LiveStreamEventService.RequiredCollectionError.Reason) [MobileApplicationService](/ad-manager/api/reference/v202508/MobileApplicationService.RequiredCollectionError.Reason) [NativeStyleService](/ad-manager/api/reference/v202508/NativeStyleService.RequiredCollectionError.Reason) [NetworkService](/ad-manager/api/reference/v202508/NetworkService.RequiredCollectionError.Reason) [OrderService](/ad-manager/api/reference/v202508/OrderService.RequiredCollectionError.Reason) [PlacementService](/ad-manager/api/reference/v202508/PlacementService.RequiredCollectionError.Reason) [ProposalLineItemService](/ad-manager/api/reference/v202508/ProposalLineItemService.RequiredCollectionError.Reason) [ProposalService](/ad-manager/api/reference/v202508/ProposalService.RequiredCollectionError.Reason) **PublisherQueryLanguageService** [ReportService](/ad-manager/api/reference/v202508/ReportService.RequiredCollectionError.Reason) [SegmentPopulationService](/ad-manager/api/reference/v202508/SegmentPopulationService.RequiredCollectionError.Reason) [SiteService](/ad-manager/api/reference/v202508/SiteService.RequiredCollectionError.Reason) [StreamActivityMonitorService](/ad-manager/api/reference/v202508/StreamActivityMonitorService.RequiredCollectionError.Reason) [SuggestedAdUnitService](/ad-manager/api/reference/v202508/SuggestedAdUnitService.RequiredCollectionError.Reason) [TargetingPresetService](/ad-manager/api/reference/v202508/TargetingPresetService.RequiredCollectionError.Reason) [TeamService](/ad-manager/api/reference/v202508/TeamService.RequiredCollectionError.Reason) [UserService](/ad-manager/api/reference/v202508/UserService.RequiredCollectionError.Reason) [UserTeamAssociationService](/ad-manager/api/reference/v202508/UserTeamAssociationService.RequiredCollectionError.Reason) [YieldGroupService](/ad-manager/api/reference/v202508/YieldGroupService.RequiredCollectionError.Reason) **Dependencies** \n[RequiredCollectionError](/ad-manager/api/reference/v202508/PublisherQueryLanguageService.RequiredCollectionError) \n▼\n**RequiredCollectionError.Reason**\n\n*** ** * ** ***\n\nNamespace\n:\n `https://www.google.com/apis/ads/publisher/v202508`\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. |"]]