**Service** [AdRuleService](https://developers.google.com/ad-manager/api/reference/v202605/AdRuleService.RequiredError) [AdjustmentService](https://developers.google.com/ad-manager/api/reference/v202605/AdjustmentService.RequiredError) [AdsTxtService](https://developers.google.com/ad-manager/api/reference/v202605/AdsTxtService.RequiredError) [AudienceSegmentService](https://developers.google.com/ad-manager/api/reference/v202605/AudienceSegmentService.RequiredError) [CdnConfigurationService](https://developers.google.com/ad-manager/api/reference/v202605/CdnConfigurationService.RequiredError) [CmsMetadataService](https://developers.google.com/ad-manager/api/reference/v202605/CmsMetadataService.RequiredError) [CompanyService](https://developers.google.com/ad-manager/api/reference/v202605/CompanyService.RequiredError) [ContactService](https://developers.google.com/ad-manager/api/reference/v202605/ContactService.RequiredError) [ContentBundleService](https://developers.google.com/ad-manager/api/reference/v202605/ContentBundleService.RequiredError) [ContentService](https://developers.google.com/ad-manager/api/reference/v202605/ContentService.RequiredError) [CreativeService](https://developers.google.com/ad-manager/api/reference/v202605/CreativeService.RequiredError) [CreativeSetService](https://developers.google.com/ad-manager/api/reference/v202605/CreativeSetService.RequiredError) [CreativeTemplateService](https://developers.google.com/ad-manager/api/reference/v202605/CreativeTemplateService.RequiredError) [CreativeWrapperService](https://developers.google.com/ad-manager/api/reference/v202605/CreativeWrapperService.RequiredError) [CustomFieldService](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.RequiredError) [CustomTargetingService](https://developers.google.com/ad-manager/api/reference/v202605/CustomTargetingService.RequiredError) [DaiAuthenticationKeyService](https://developers.google.com/ad-manager/api/reference/v202605/DaiAuthenticationKeyService.RequiredError) [DaiEncodingProfileService](https://developers.google.com/ad-manager/api/reference/v202605/DaiEncodingProfileService.RequiredError) [ForecastService](https://developers.google.com/ad-manager/api/reference/v202605/ForecastService.RequiredError) [InventoryService](https://developers.google.com/ad-manager/api/reference/v202605/InventoryService.RequiredError) [LabelService](https://developers.google.com/ad-manager/api/reference/v202605/LabelService.RequiredError) [LineItemCreativeAssociationService](https://developers.google.com/ad-manager/api/reference/v202605/LineItemCreativeAssociationService.RequiredError) [LineItemService](https://developers.google.com/ad-manager/api/reference/v202605/LineItemService.RequiredError) [LineItemTemplateService](https://developers.google.com/ad-manager/api/reference/v202605/LineItemTemplateService.RequiredError) [LiveStreamEventService](https://developers.google.com/ad-manager/api/reference/v202605/LiveStreamEventService.RequiredError) [MobileApplicationService](https://developers.google.com/ad-manager/api/reference/v202605/MobileApplicationService.RequiredError) [NativeStyleService](https://developers.google.com/ad-manager/api/reference/v202605/NativeStyleService.RequiredError) [NetworkService](https://developers.google.com/ad-manager/api/reference/v202605/NetworkService.RequiredError) [OrderService](https://developers.google.com/ad-manager/api/reference/v202605/OrderService.RequiredError) [PlacementService](https://developers.google.com/ad-manager/api/reference/v202605/PlacementService.RequiredError) [ProposalLineItemService](https://developers.google.com/ad-manager/api/reference/v202605/ProposalLineItemService.RequiredError) **ProposalService** [PublisherQueryLanguageService](https://developers.google.com/ad-manager/api/reference/v202605/PublisherQueryLanguageService.RequiredError) [ReportService](https://developers.google.com/ad-manager/api/reference/v202605/ReportService.RequiredError) [SegmentPopulationService](https://developers.google.com/ad-manager/api/reference/v202605/SegmentPopulationService.RequiredError) [SiteService](https://developers.google.com/ad-manager/api/reference/v202605/SiteService.RequiredError) [StreamActivityMonitorService](https://developers.google.com/ad-manager/api/reference/v202605/StreamActivityMonitorService.RequiredError) [SuggestedAdUnitService](https://developers.google.com/ad-manager/api/reference/v202605/SuggestedAdUnitService.RequiredError) [TargetingPresetService](https://developers.google.com/ad-manager/api/reference/v202605/TargetingPresetService.RequiredError) [TeamService](https://developers.google.com/ad-manager/api/reference/v202605/TeamService.RequiredError) [UserService](https://developers.google.com/ad-manager/api/reference/v202605/UserService.RequiredError) [UserTeamAssociationService](https://developers.google.com/ad-manager/api/reference/v202605/UserTeamAssociationService.RequiredError) [YieldGroupService](https://developers.google.com/ad-manager/api/reference/v202605/YieldGroupService.RequiredError) **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](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.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** [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)

Errors due to missing required field.

*** ** * ** ***

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. |
| **`RequiredError`** ||
| ### `reason` | ` https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.RequiredError.Reason ` The error reason represented by an enum. *** ** * ** *** **Enumerations** `REQUIRED` :   Missing required field. <br /> |