[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-06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\u003eThe SegmentPopulationService allows you to manage and analyze audience segments in Google Ad Manager.\u003c/p\u003e\n"],["\u003cp\u003eIt provides methods to estimate the size of audience segments and understand their composition.\u003c/p\u003e\n"],["\u003cp\u003eThis service utilizes the Publisher Query Language (PQL) for advanced filtering and data retrieval.\u003c/p\u003e\n"],["\u003cp\u003eYou can use this service to predict the reach of your ad campaigns based on audience targeting criteria.\u003c/p\u003e\n"],["\u003cp\u003ePotential errors you might encounter when using this service include those related to API version, authentication, required fields, and data formatting.\u003c/p\u003e\n"]]],["The content outlines a comprehensive set of services related to ad management, including **AdRuleService, AdjustmentService, AdsTxtService,** and many more. These services manage various aspects of advertising, like content, creatives, forecasting, inventory, line items, and reporting. Additionally, it lists **errors inherited** from `ApiError`, such as `AuthenticationError`, `InternalApiError`, and `NotNullError`. It further specifies details regarding the `ApiError` and `NotNullError`, such as `fieldPath`, `trigger`, and possible `reasons` for the `NotNullError`.\n"],null,["# type NotNullError (v202408)\n\n**Service** \n[AdRuleService](/ad-manager/api/reference/v202408/AdRuleService.NotNullError) [AdjustmentService](/ad-manager/api/reference/v202408/AdjustmentService.NotNullError) [AdsTxtService](/ad-manager/api/reference/v202408/AdsTxtService.NotNullError) [AudienceSegmentService](/ad-manager/api/reference/v202408/AudienceSegmentService.NotNullError) [CdnConfigurationService](/ad-manager/api/reference/v202408/CdnConfigurationService.NotNullError) [CmsMetadataService](/ad-manager/api/reference/v202408/CmsMetadataService.NotNullError) [CompanyService](/ad-manager/api/reference/v202408/CompanyService.NotNullError) [ContactService](/ad-manager/api/reference/v202408/ContactService.NotNullError) [ContentBundleService](/ad-manager/api/reference/v202408/ContentBundleService.NotNullError) [ContentService](/ad-manager/api/reference/v202408/ContentService.NotNullError) [CreativeService](/ad-manager/api/reference/v202408/CreativeService.NotNullError) [CreativeSetService](/ad-manager/api/reference/v202408/CreativeSetService.NotNullError) [CreativeTemplateService](/ad-manager/api/reference/v202408/CreativeTemplateService.NotNullError) [CreativeWrapperService](/ad-manager/api/reference/v202408/CreativeWrapperService.NotNullError) [CustomFieldService](/ad-manager/api/reference/v202408/CustomFieldService.NotNullError) [CustomTargetingService](/ad-manager/api/reference/v202408/CustomTargetingService.NotNullError) [DaiAuthenticationKeyService](/ad-manager/api/reference/v202408/DaiAuthenticationKeyService.NotNullError) [DaiEncodingProfileService](/ad-manager/api/reference/v202408/DaiEncodingProfileService.NotNullError) [ForecastService](/ad-manager/api/reference/v202408/ForecastService.NotNullError) [InventoryService](/ad-manager/api/reference/v202408/InventoryService.NotNullError) [LabelService](/ad-manager/api/reference/v202408/LabelService.NotNullError) [LineItemCreativeAssociationService](/ad-manager/api/reference/v202408/LineItemCreativeAssociationService.NotNullError) [LineItemService](/ad-manager/api/reference/v202408/LineItemService.NotNullError) [LineItemTemplateService](/ad-manager/api/reference/v202408/LineItemTemplateService.NotNullError) [LiveStreamEventService](/ad-manager/api/reference/v202408/LiveStreamEventService.NotNullError) [MobileApplicationService](/ad-manager/api/reference/v202408/MobileApplicationService.NotNullError) [NativeStyleService](/ad-manager/api/reference/v202408/NativeStyleService.NotNullError) [NetworkService](/ad-manager/api/reference/v202408/NetworkService.NotNullError) [OrderService](/ad-manager/api/reference/v202408/OrderService.NotNullError) [PlacementService](/ad-manager/api/reference/v202408/PlacementService.NotNullError) [ProposalLineItemService](/ad-manager/api/reference/v202408/ProposalLineItemService.NotNullError) [ProposalService](/ad-manager/api/reference/v202408/ProposalService.NotNullError) [PublisherQueryLanguageService](/ad-manager/api/reference/v202408/PublisherQueryLanguageService.NotNullError) [ReportService](/ad-manager/api/reference/v202408/ReportService.NotNullError) **SegmentPopulationService** [SiteService](/ad-manager/api/reference/v202408/SiteService.NotNullError) [StreamActivityMonitorService](/ad-manager/api/reference/v202408/StreamActivityMonitorService.NotNullError) [SuggestedAdUnitService](/ad-manager/api/reference/v202408/SuggestedAdUnitService.NotNullError) [TargetingPresetService](/ad-manager/api/reference/v202408/TargetingPresetService.NotNullError) [TeamService](/ad-manager/api/reference/v202408/TeamService.NotNullError) [UserService](/ad-manager/api/reference/v202408/UserService.NotNullError) [UserTeamAssociationService](/ad-manager/api/reference/v202408/UserTeamAssociationService.NotNullError) [YieldGroupService](/ad-manager/api/reference/v202408/YieldGroupService.NotNullError) **Inheritance** \n[ApiError](/ad-manager/api/reference/v202408/SegmentPopulationService.ApiError) \n▼\n[ApiVersionError](/ad-manager/api/reference/v202408/SegmentPopulationService.ApiVersionError) [AuthenticationError](/ad-manager/api/reference/v202408/SegmentPopulationService.AuthenticationError) [CollectionSizeError](/ad-manager/api/reference/v202408/SegmentPopulationService.CollectionSizeError) [CommonError](/ad-manager/api/reference/v202408/SegmentPopulationService.CommonError) [FeatureError](/ad-manager/api/reference/v202408/SegmentPopulationService.FeatureError) [InternalApiError](/ad-manager/api/reference/v202408/SegmentPopulationService.InternalApiError) **NotNullError** [ParseError](/ad-manager/api/reference/v202408/SegmentPopulationService.ParseError) [PermissionError](/ad-manager/api/reference/v202408/SegmentPopulationService.PermissionError) [PublisherQueryLanguageConte...](/ad-manager/api/reference/v202408/SegmentPopulationService.PublisherQueryLanguageContextError \"PublisherQueryLanguageContextError\") [PublisherQueryLanguageSynta...](/ad-manager/api/reference/v202408/SegmentPopulationService.PublisherQueryLanguageSyntaxError \"PublisherQueryLanguageSyntaxError\") [QuotaError](/ad-manager/api/reference/v202408/SegmentPopulationService.QuotaError) [RequiredCollectionError](/ad-manager/api/reference/v202408/SegmentPopulationService.RequiredCollectionError) [RequiredError](/ad-manager/api/reference/v202408/SegmentPopulationService.RequiredError) [SegmentPopulationError](/ad-manager/api/reference/v202408/SegmentPopulationService.SegmentPopulationError) [ServerError](/ad-manager/api/reference/v202408/SegmentPopulationService.ServerError) [StringFormatError](/ad-manager/api/reference/v202408/SegmentPopulationService.StringFormatError) [StringLengthError](/ad-manager/api/reference/v202408/SegmentPopulationService.StringLengthError)\n\n*** ** * ** ***\n\nNamespace\n:\n `https://www.google.com/apis/ads/publisher/v202408`\n\n| Field ----- ||\n|-------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| **`ApiError` (inherited)** ||\n| ### `fieldPath` | ` `xsd:`string` \u003cbr /\u003e |\n| ### `fieldPathElements` | ` `[FieldPathElement](/ad-manager/api/reference/v202408/SegmentPopulationService.FieldPathElement)`[]` \u003cbr /\u003e |\n| ### `trigger` | ` `xsd:`string` \u003cbr /\u003e |\n| ### `errorString` | ` `xsd:`string` \u003cbr /\u003e |\n| **`NotNullError`** ||\n| ### `reason` | ` `[NotNullError.Reason](/ad-manager/api/reference/v202408/SegmentPopulationService.NotNullError.Reason)` ` *** ** * ** *** **Enumerations** `ARG1_NULL` : `ARG2_NULL` : `ARG3_NULL` : `NULL` : `UNKNOWN` : \u003cbr /\u003e |"]]