# 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** [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](https://developers.google.com/ad-manager/api/reference/v202602/MobileApplicationService.NullError) [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/CustomFieldService.ApiError) ▼ [ApiVersionError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.ApiVersionError) [AuthenticationError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.AuthenticationError) [CollectionSizeError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.CollectionSizeError) [CommonError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.CommonError) [CustomFieldError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.CustomFieldError) [EntityLimitReachedError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.EntityLimitReachedError) [FeatureError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.FeatureError) [InternalApiError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.InternalApiError) [NotNullError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.NotNullError) **NullError** [ParseError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.ParseError) [PermissionError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.PermissionError) [PublisherQueryLanguageConte...](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.PublisherQueryLanguageContextError "PublisherQueryLanguageContextError") [PublisherQueryLanguageSynta...](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.PublisherQueryLanguageSyntaxError "PublisherQueryLanguageSyntaxError") [QuotaError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.QuotaError) [RequiredCollectionError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.RequiredCollectionError) [RequiredError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.RequiredError) [ServerError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.ServerError) [StatementError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.StatementError) [StringFormatError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.StringFormatError) [StringLengthError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.StringLengthError) [TypeError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.TypeError) [UniqueError](https://developers.google.com/ad-manager/api/reference/v202602/CustomFieldService.UniqueError)

Errors associated with violation of a NOT NULL check.

*** ** * ** ***

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/CustomFieldService.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/CustomFieldService.NullError.Reason ` The error reason represented by an enum. *** ** * ** *** **Enumerations** `NULL_CONTENT` :   Specified list/container must not contain any null elements <br /> |