**Service** [AdRuleService](https://developers.google.com/ad-manager/api/reference/v202605/AdRuleService.NotNullError) [AdjustmentService](https://developers.google.com/ad-manager/api/reference/v202605/AdjustmentService.NotNullError) [AdsTxtService](https://developers.google.com/ad-manager/api/reference/v202605/AdsTxtService.NotNullError) [AudienceSegmentService](https://developers.google.com/ad-manager/api/reference/v202605/AudienceSegmentService.NotNullError) [CdnConfigurationService](https://developers.google.com/ad-manager/api/reference/v202605/CdnConfigurationService.NotNullError) [CmsMetadataService](https://developers.google.com/ad-manager/api/reference/v202605/CmsMetadataService.NotNullError) [CompanyService](https://developers.google.com/ad-manager/api/reference/v202605/CompanyService.NotNullError) [ContactService](https://developers.google.com/ad-manager/api/reference/v202605/ContactService.NotNullError) [ContentBundleService](https://developers.google.com/ad-manager/api/reference/v202605/ContentBundleService.NotNullError) [ContentService](https://developers.google.com/ad-manager/api/reference/v202605/ContentService.NotNullError) [CreativeService](https://developers.google.com/ad-manager/api/reference/v202605/CreativeService.NotNullError) [CreativeSetService](https://developers.google.com/ad-manager/api/reference/v202605/CreativeSetService.NotNullError) [CreativeTemplateService](https://developers.google.com/ad-manager/api/reference/v202605/CreativeTemplateService.NotNullError) [CreativeWrapperService](https://developers.google.com/ad-manager/api/reference/v202605/CreativeWrapperService.NotNullError) [CustomFieldService](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.NotNullError) [CustomTargetingService](https://developers.google.com/ad-manager/api/reference/v202605/CustomTargetingService.NotNullError) [DaiAuthenticationKeyService](https://developers.google.com/ad-manager/api/reference/v202605/DaiAuthenticationKeyService.NotNullError) [DaiEncodingProfileService](https://developers.google.com/ad-manager/api/reference/v202605/DaiEncodingProfileService.NotNullError) [ForecastService](https://developers.google.com/ad-manager/api/reference/v202605/ForecastService.NotNullError) [InventoryService](https://developers.google.com/ad-manager/api/reference/v202605/InventoryService.NotNullError) [LabelService](https://developers.google.com/ad-manager/api/reference/v202605/LabelService.NotNullError) [LineItemCreativeAssociationService](https://developers.google.com/ad-manager/api/reference/v202605/LineItemCreativeAssociationService.NotNullError) [LineItemService](https://developers.google.com/ad-manager/api/reference/v202605/LineItemService.NotNullError) [LineItemTemplateService](https://developers.google.com/ad-manager/api/reference/v202605/LineItemTemplateService.NotNullError) [LiveStreamEventService](https://developers.google.com/ad-manager/api/reference/v202605/LiveStreamEventService.NotNullError) [MobileApplicationService](https://developers.google.com/ad-manager/api/reference/v202605/MobileApplicationService.NotNullError) [NativeStyleService](https://developers.google.com/ad-manager/api/reference/v202605/NativeStyleService.NotNullError) [NetworkService](https://developers.google.com/ad-manager/api/reference/v202605/NetworkService.NotNullError) [OrderService](https://developers.google.com/ad-manager/api/reference/v202605/OrderService.NotNullError) [PlacementService](https://developers.google.com/ad-manager/api/reference/v202605/PlacementService.NotNullError) [ProposalLineItemService](https://developers.google.com/ad-manager/api/reference/v202605/ProposalLineItemService.NotNullError) [ProposalService](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.NotNullError) [PublisherQueryLanguageService](https://developers.google.com/ad-manager/api/reference/v202605/PublisherQueryLanguageService.NotNullError) [ReportService](https://developers.google.com/ad-manager/api/reference/v202605/ReportService.NotNullError) **SegmentPopulationService** [SiteService](https://developers.google.com/ad-manager/api/reference/v202605/SiteService.NotNullError) [StreamActivityMonitorService](https://developers.google.com/ad-manager/api/reference/v202605/StreamActivityMonitorService.NotNullError) [SuggestedAdUnitService](https://developers.google.com/ad-manager/api/reference/v202605/SuggestedAdUnitService.NotNullError) [TargetingPresetService](https://developers.google.com/ad-manager/api/reference/v202605/TargetingPresetService.NotNullError) [TeamService](https://developers.google.com/ad-manager/api/reference/v202605/TeamService.NotNullError) [UserService](https://developers.google.com/ad-manager/api/reference/v202605/UserService.NotNullError) [UserTeamAssociationService](https://developers.google.com/ad-manager/api/reference/v202605/UserTeamAssociationService.NotNullError) [YieldGroupService](https://developers.google.com/ad-manager/api/reference/v202605/YieldGroupService.NotNullError) **Inheritance** [ApiError](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.ApiError) ▼ [ApiVersionError](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.ApiVersionError) [AuthenticationError](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.AuthenticationError) [CollectionSizeError](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.CollectionSizeError) [CommonError](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.CommonError) [FeatureError](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.FeatureError) [InternalApiError](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.InternalApiError) **NotNullError** [ParseError](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.ParseError) [PermissionError](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.PermissionError) [PublisherQueryLanguageConte...](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.PublisherQueryLanguageContextError "PublisherQueryLanguageContextError") [PublisherQueryLanguageSynta...](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.PublisherQueryLanguageSyntaxError "PublisherQueryLanguageSyntaxError") [QuotaError](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.QuotaError) [RequiredCollectionError](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.RequiredCollectionError) [RequiredError](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.RequiredError) [SegmentPopulationError](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.SegmentPopulationError) [ServerError](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.ServerError) [StringFormatError](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.StringFormatError) [StringLengthError](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.StringLengthError)

*** ** * ** ***

Namespace
:
    `https://www.google.com/apis/ads/publisher/v202605`

| ## Field ||
|---|---|
| **`ApiError` (inherited)** ||
| ### `fieldPath` | ` xsd:string` <br /> |
| ### `fieldPathElements` | ` https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.FieldPathElement[]` <br /> |
| ### `trigger` | ` xsd:string` <br /> |
| ### `errorString` | ` xsd:string` <br /> |
| **`NotNullError`** ||
| ### `reason` | ` https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.NotNullError.Reason ` *** ** * ** *** **Enumerations** `ARG1_NULL` : `ARG2_NULL` : `ARG3_NULL` : `NULL` : `UNKNOWN` : <br /> |