**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** [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](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.NotNullError) [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/ProposalService.ApiError) ▼ [ApiVersionError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.ApiVersionError) [AudienceSegmentError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.AudienceSegmentError) [AuthenticationError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.AuthenticationError) [BillingError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.BillingError) [CollectionSizeError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.CollectionSizeError) [CommonError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.CommonError) [CurrencyCodeError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.CurrencyCodeError) [CustomFieldValueError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.CustomFieldValueError) [DealError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.DealError) [EntityChildrenLimitReachedE...](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.EntityChildrenLimitReachedError "EntityChildrenLimitReachedError") [EntityLimitReachedError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.EntityLimitReachedError) [ExchangeRateError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.ExchangeRateError) [FeatureError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.FeatureError) [ForecastError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.ForecastError) [InternalApiError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.InternalApiError) [InvalidUrlError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.InvalidUrlError) [LabelEntityAssociationError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.LabelEntityAssociationError) [LineItemOperationError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.LineItemOperationError) **NotNullError** [NullError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.NullError) [ParseError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.ParseError) [PermissionError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.PermissionError) [PrecisionError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.PrecisionError) [ProgrammaticError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.ProgrammaticError) [ProposalActionError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.ProposalActionError) [ProposalError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.ProposalError) [ProposalLineItemError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.ProposalLineItemError) [ProposalLineItemMakegoodError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.ProposalLineItemMakegoodError) [ProposalLineItemProgrammati...](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.ProposalLineItemProgrammaticError "ProposalLineItemProgrammaticError") [PublisherQueryLanguageConte...](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.PublisherQueryLanguageContextError "PublisherQueryLanguageContextError") [PublisherQueryLanguageSynta...](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.PublisherQueryLanguageSyntaxError "PublisherQueryLanguageSyntaxError") [QuotaError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.QuotaError) [RangeError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.RangeError) [RequiredCollectionError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.RequiredCollectionError) [RequiredError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.RequiredError) [RequiredNumberError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.RequiredNumberError) [ServerError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.ServerError) [StatementError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.StatementError) [StringFormatError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.StringFormatError) [StringLengthError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.StringLengthError) [TeamError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.TeamError) [TimeZoneError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.TimeZoneError) [TypeError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.TypeError) [UniqueError](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.UniqueError)

Caused by supplying a null value for an attribute that cannot be null.

*** ** * ** ***

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

| ## Field ||
|---|---|
| **`ApiError` (inherited)** ||
| ### `fieldPath` | ` xsd:string` The OGNL field path to identify cause of error. |
| ### `fieldPathElements` | ` https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.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. |
| **`NotNullError`** ||
| ### `reason` | ` https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.NotNullError.Reason ` The error reason represented by an enum. *** ** * ** *** **Enumerations** `ARG1_NULL` :   Assuming that a method will not have more than 3 arguments, if it does, return NULL `ARG2_NULL` : `ARG3_NULL` : `NULL` : `UNKNOWN` :   The value returned if the actual value is not exposed by the requested API version. <br /> |