# type NullError (v202602)

**Service** [AdjustmentService](https://developers.google.com/ad-manager/api/reference/v202602/AdjustmentService.NullError) [CompanyService](https://developers.google.com/ad-manager/api/reference/v202602/CompanyService.NullError) [CreativeService](https://developers.google.com/ad-manager/api/reference/v202602/CreativeService.NullError) [CreativeSetService](https://developers.google.com/ad-manager/api/reference/v202602/CreativeSetService.NullError) [CreativeTemplateService](https://developers.google.com/ad-manager/api/reference/v202602/CreativeTemplateService.NullError) [CreativeWrapperService](https://developers.google.com/ad-manager/api/reference/v202602/CreativeWrapperService.NullError) [CustomFieldService](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.NullError) [CustomTargetingService](https://developers.google.com/ad-manager/api/reference/v202602/CustomTargetingService.NullError) [DaiEncodingProfileService](https://developers.google.com/ad-manager/api/reference/v202602/DaiEncodingProfileService.NullError) [ForecastService](https://developers.google.com/ad-manager/api/reference/v202602/ForecastService.NullError) [InventoryService](https://developers.google.com/ad-manager/api/reference/v202602/InventoryService.NullError) [LabelService](https://developers.google.com/ad-manager/api/reference/v202602/LabelService.NullError) [LineItemCreativeAssociationService](https://developers.google.com/ad-manager/api/reference/v202602/LineItemCreativeAssociationService.NullError) [LineItemService](https://developers.google.com/ad-manager/api/reference/v202602/LineItemService.NullError) [LineItemTemplateService](https://developers.google.com/ad-manager/api/reference/v202602/LineItemTemplateService.NullError) [LiveStreamEventService](https://developers.google.com/ad-manager/api/reference/v202602/LiveStreamEventService.NullError) **MobileApplicationService** [NativeStyleService](https://developers.google.com/ad-manager/api/reference/v202602/NativeStyleService.NullError) [OrderService](https://developers.google.com/ad-manager/api/reference/v202602/OrderService.NullError) [PlacementService](https://developers.google.com/ad-manager/api/reference/v202602/PlacementService.NullError) [ProposalService](https://developers.google.com/ad-manager/api/reference/v202602/ProposalService.NullError) [PublisherQueryLanguageService](https://developers.google.com/ad-manager/api/reference/v202602/PublisherQueryLanguageService.NullError) [SiteService](https://developers.google.com/ad-manager/api/reference/v202602/SiteService.NullError) [TeamService](https://developers.google.com/ad-manager/api/reference/v202602/TeamService.NullError) [UserTeamAssociationService](https://developers.google.com/ad-manager/api/reference/v202602/UserTeamAssociationService.NullError) **Inheritance** [ApiError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.ApiError) ▼ [ApiVersionError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.ApiVersionError) [AuthenticationError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.AuthenticationError) [CollectionSizeError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.CollectionSizeError) [CommonError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.CommonError) [FeatureError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.FeatureError) [InternalApiError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.InternalApiError) [MobileApplicationActionError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.MobileApplicationActionError) [MobileApplicationError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.MobileApplicationError) [NotNullError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.NotNullError) **NullError** [ParseError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.ParseError) [PermissionError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.PermissionError) [PublisherQueryLanguageConte...](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.PublisherQueryLanguageContextError "PublisherQueryLanguageContextError") [PublisherQueryLanguageSynta...](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.PublisherQueryLanguageSyntaxError "PublisherQueryLanguageSyntaxError") [QuotaError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.QuotaError) [RequiredCollectionError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.RequiredCollectionError) [RequiredError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.RequiredError) [ServerError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.ServerError) [StatementError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.StatementError) [StringFormatError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.StringFormatError) [StringLengthError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.StringLengthError) [UniqueError](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.UniqueError)

Caused by supplying a non-null value for an attribute that should be null.

*** ** * ** ***

Namespace
:
    `https://www.google.com/apis/ads/publisher/v202602`

| ## Field ||
|---|---|
| **`ApiError` (inherited)** ||
| ### `fieldPath` | ` xsd:string` The OGNL field path to identify cause of error. |
| ### `fieldPathElements` | ` https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.FieldPathElement[]` A parsed copy of the field path. For example, the field path "operations\[1\].operand" corresponds to this list: {FieldPathElement(field = "operations", index = 1), FieldPathElement(field = "operand", index = null)}. |
| ### `trigger` | ` xsd:string` The data that caused the error. |
| ### `errorString` | ` xsd:string` A simple string representation of the error and reason. |
| **`NullError`** ||
| ### `reason` | ` https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.NullError.Reason ` The error reason represented by an enum. *** ** * ** *** **Enumerations** `NOT_NULL` : `UNKNOWN` :   The value returned if the actual value is not exposed by the requested API version. <br /> |