**Service** [AdRuleService](https://developers.google.com/ad-manager/api/reference/v202605/AdRuleService.UniqueError) [AdjustmentService](https://developers.google.com/ad-manager/api/reference/v202605/AdjustmentService.UniqueError) [CmsMetadataService](https://developers.google.com/ad-manager/api/reference/v202605/CmsMetadataService.UniqueError) [CompanyService](https://developers.google.com/ad-manager/api/reference/v202605/CompanyService.UniqueError) [ContactService](https://developers.google.com/ad-manager/api/reference/v202605/ContactService.UniqueError) [ContentBundleService](https://developers.google.com/ad-manager/api/reference/v202605/ContentBundleService.UniqueError) [CreativeService](https://developers.google.com/ad-manager/api/reference/v202605/CreativeService.UniqueError) [CreativeSetService](https://developers.google.com/ad-manager/api/reference/v202605/CreativeSetService.UniqueError) [CreativeTemplateService](https://developers.google.com/ad-manager/api/reference/v202605/CreativeTemplateService.UniqueError) [CreativeWrapperService](https://developers.google.com/ad-manager/api/reference/v202605/CreativeWrapperService.UniqueError) **CustomFieldService** [CustomTargetingService](https://developers.google.com/ad-manager/api/reference/v202605/CustomTargetingService.UniqueError) [DaiAuthenticationKeyService](https://developers.google.com/ad-manager/api/reference/v202605/DaiAuthenticationKeyService.UniqueError) [DaiEncodingProfileService](https://developers.google.com/ad-manager/api/reference/v202605/DaiEncodingProfileService.UniqueError) [ForecastService](https://developers.google.com/ad-manager/api/reference/v202605/ForecastService.UniqueError) [InventoryService](https://developers.google.com/ad-manager/api/reference/v202605/InventoryService.UniqueError) [LabelService](https://developers.google.com/ad-manager/api/reference/v202605/LabelService.UniqueError) [LineItemCreativeAssociationService](https://developers.google.com/ad-manager/api/reference/v202605/LineItemCreativeAssociationService.UniqueError) [LineItemService](https://developers.google.com/ad-manager/api/reference/v202605/LineItemService.UniqueError) [LineItemTemplateService](https://developers.google.com/ad-manager/api/reference/v202605/LineItemTemplateService.UniqueError) [LiveStreamEventService](https://developers.google.com/ad-manager/api/reference/v202605/LiveStreamEventService.UniqueError) [MobileApplicationService](https://developers.google.com/ad-manager/api/reference/v202605/MobileApplicationService.UniqueError) [NativeStyleService](https://developers.google.com/ad-manager/api/reference/v202605/NativeStyleService.UniqueError) [NetworkService](https://developers.google.com/ad-manager/api/reference/v202605/NetworkService.UniqueError) [OrderService](https://developers.google.com/ad-manager/api/reference/v202605/OrderService.UniqueError) [PlacementService](https://developers.google.com/ad-manager/api/reference/v202605/PlacementService.UniqueError) [ProposalLineItemService](https://developers.google.com/ad-manager/api/reference/v202605/ProposalLineItemService.UniqueError) [ProposalService](https://developers.google.com/ad-manager/api/reference/v202605/ProposalService.UniqueError) [PublisherQueryLanguageService](https://developers.google.com/ad-manager/api/reference/v202605/PublisherQueryLanguageService.UniqueError) [SuggestedAdUnitService](https://developers.google.com/ad-manager/api/reference/v202605/SuggestedAdUnitService.UniqueError) [TargetingPresetService](https://developers.google.com/ad-manager/api/reference/v202605/TargetingPresetService.UniqueError) [TeamService](https://developers.google.com/ad-manager/api/reference/v202605/TeamService.UniqueError) [UserService](https://developers.google.com/ad-manager/api/reference/v202605/UserService.UniqueError) [YieldGroupService](https://developers.google.com/ad-manager/api/reference/v202605/YieldGroupService.UniqueError) **Inheritance** [ApiError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.ApiError) ▼ [ApiVersionError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.ApiVersionError) [AuthenticationError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.AuthenticationError) [CollectionSizeError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.CollectionSizeError) [CommonError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.CommonError) [CustomFieldError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.CustomFieldError) [EntityLimitReachedError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.EntityLimitReachedError) [FeatureError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.FeatureError) [InternalApiError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.InternalApiError) [NotNullError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.NotNullError) [NullError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.NullError) [ParseError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.ParseError) [PermissionError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.PermissionError) [PublisherQueryLanguageConte...](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.PublisherQueryLanguageContextError "PublisherQueryLanguageContextError") [PublisherQueryLanguageSynta...](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.PublisherQueryLanguageSyntaxError "PublisherQueryLanguageSyntaxError") [QuotaError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.QuotaError) [RequiredCollectionError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.RequiredCollectionError) [RequiredError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.RequiredError) [ServerError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.ServerError) [StatementError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.StatementError) [StringFormatError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.StringFormatError) [StringLengthError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.StringLengthError) [TypeError](https://developers.google.com/ad-manager/api/reference/v202605/CustomFieldService.TypeError) **UniqueError**

An error for a field which must satisfy a uniqueness constraint

*** ** * ** ***

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/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. |
| **`UniqueError`** ||