# type NotNullError (v202511)

**Service** [AdRuleService](https://developers.google.com/ad-manager/api/reference/v202511/AdRuleService.NotNullError) [AdjustmentService](https://developers.google.com/ad-manager/api/reference/v202511/AdjustmentService.NotNullError) [AdsTxtService](https://developers.google.com/ad-manager/api/reference/v202511/AdsTxtService.NotNullError) [AudienceSegmentService](https://developers.google.com/ad-manager/api/reference/v202511/AudienceSegmentService.NotNullError) [CdnConfigurationService](https://developers.google.com/ad-manager/api/reference/v202511/CdnConfigurationService.NotNullError) [CmsMetadataService](https://developers.google.com/ad-manager/api/reference/v202511/CmsMetadataService.NotNullError) [CompanyService](https://developers.google.com/ad-manager/api/reference/v202511/CompanyService.NotNullError) [ContactService](https://developers.google.com/ad-manager/api/reference/v202511/ContactService.NotNullError) [ContentBundleService](https://developers.google.com/ad-manager/api/reference/v202511/ContentBundleService.NotNullError) [ContentService](https://developers.google.com/ad-manager/api/reference/v202511/ContentService.NotNullError) [CreativeService](https://developers.google.com/ad-manager/api/reference/v202511/CreativeService.NotNullError) [CreativeSetService](https://developers.google.com/ad-manager/api/reference/v202511/CreativeSetService.NotNullError) [CreativeTemplateService](https://developers.google.com/ad-manager/api/reference/v202511/CreativeTemplateService.NotNullError) [CreativeWrapperService](https://developers.google.com/ad-manager/api/reference/v202511/CreativeWrapperService.NotNullError) [CustomFieldService](https://developers.google.com/ad-manager/api/reference/v202511/CustomFieldService.NotNullError) [CustomTargetingService](https://developers.google.com/ad-manager/api/reference/v202511/CustomTargetingService.NotNullError) [DaiAuthenticationKeyService](https://developers.google.com/ad-manager/api/reference/v202511/DaiAuthenticationKeyService.NotNullError) [DaiEncodingProfileService](https://developers.google.com/ad-manager/api/reference/v202511/DaiEncodingProfileService.NotNullError) [ForecastService](https://developers.google.com/ad-manager/api/reference/v202511/ForecastService.NotNullError) [InventoryService](https://developers.google.com/ad-manager/api/reference/v202511/InventoryService.NotNullError) [LabelService](https://developers.google.com/ad-manager/api/reference/v202511/LabelService.NotNullError) [LineItemCreativeAssociationService](https://developers.google.com/ad-manager/api/reference/v202511/LineItemCreativeAssociationService.NotNullError) [LineItemService](https://developers.google.com/ad-manager/api/reference/v202511/LineItemService.NotNullError) [LineItemTemplateService](https://developers.google.com/ad-manager/api/reference/v202511/LineItemTemplateService.NotNullError) [LiveStreamEventService](https://developers.google.com/ad-manager/api/reference/v202511/LiveStreamEventService.NotNullError) [MobileApplicationService](https://developers.google.com/ad-manager/api/reference/v202511/MobileApplicationService.NotNullError) [NativeStyleService](https://developers.google.com/ad-manager/api/reference/v202511/NativeStyleService.NotNullError) [NetworkService](https://developers.google.com/ad-manager/api/reference/v202511/NetworkService.NotNullError) [OrderService](https://developers.google.com/ad-manager/api/reference/v202511/OrderService.NotNullError) [PlacementService](https://developers.google.com/ad-manager/api/reference/v202511/PlacementService.NotNullError) [ProposalLineItemService](https://developers.google.com/ad-manager/api/reference/v202511/ProposalLineItemService.NotNullError) [ProposalService](https://developers.google.com/ad-manager/api/reference/v202511/ProposalService.NotNullError) [PublisherQueryLanguageService](https://developers.google.com/ad-manager/api/reference/v202511/PublisherQueryLanguageService.NotNullError) [ReportService](https://developers.google.com/ad-manager/api/reference/v202511/ReportService.NotNullError) **SegmentPopulationService** [SiteService](https://developers.google.com/ad-manager/api/reference/v202511/SiteService.NotNullError) [StreamActivityMonitorService](https://developers.google.com/ad-manager/api/reference/v202511/StreamActivityMonitorService.NotNullError) [SuggestedAdUnitService](https://developers.google.com/ad-manager/api/reference/v202511/SuggestedAdUnitService.NotNullError) [TargetingPresetService](https://developers.google.com/ad-manager/api/reference/v202511/TargetingPresetService.NotNullError) [TeamService](https://developers.google.com/ad-manager/api/reference/v202511/TeamService.NotNullError) [UserService](https://developers.google.com/ad-manager/api/reference/v202511/UserService.NotNullError) [UserTeamAssociationService](https://developers.google.com/ad-manager/api/reference/v202511/UserTeamAssociationService.NotNullError) [YieldGroupService](https://developers.google.com/ad-manager/api/reference/v202511/YieldGroupService.NotNullError) **Inheritance** [ApiError](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.ApiError) ▼ [ApiVersionError](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.ApiVersionError) [AuthenticationError](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.AuthenticationError) [CollectionSizeError](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.CollectionSizeError) [CommonError](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.CommonError) [FeatureError](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.FeatureError) [InternalApiError](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.InternalApiError) **NotNullError** [ParseError](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.ParseError) [PermissionError](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.PermissionError) [PublisherQueryLanguageConte...](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.PublisherQueryLanguageContextError "PublisherQueryLanguageContextError") [PublisherQueryLanguageSynta...](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.PublisherQueryLanguageSyntaxError "PublisherQueryLanguageSyntaxError") [QuotaError](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.QuotaError) [RequiredCollectionError](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.RequiredCollectionError) [RequiredError](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.RequiredError) [SegmentPopulationError](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.SegmentPopulationError) [ServerError](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.ServerError) [StringFormatError](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.StringFormatError) [StringLengthError](https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.StringLengthError)

*** ** * ** ***

Namespace
:
    `https://www.google.com/apis/ads/publisher/v202511`

| ## Field ||
|---|---|
| **`ApiError` (inherited)** ||
| ### `fieldPath` | ` xsd:string` <br /> |
| ### `fieldPathElements` | ` https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.FieldPathElement[]` <br /> |
| ### `trigger` | ` xsd:string` <br /> |
| ### `errorString` | ` xsd:string` <br /> |
| **`NotNullError`** ||
| ### `reason` | ` https://developers.google.com/ad-manager/api/reference/v202511/SegmentPopulationService.NotNullError.Reason ` *** ** * ** *** **Enumerations** `ARG1_NULL` : `ARG2_NULL` : `ARG3_NULL` : `NULL` : `UNKNOWN` : <br /> |