**Service** [AdjustmentService](https://developers.google.com/ad-manager/api/reference/v202605/AdjustmentService.UserDomainTargetingError.Reason) [ForecastService](https://developers.google.com/ad-manager/api/reference/v202605/ForecastService.UserDomainTargetingError.Reason) [LineItemService](https://developers.google.com/ad-manager/api/reference/v202605/LineItemService.UserDomainTargetingError.Reason) **LineItemTemplateService** [OrderService](https://developers.google.com/ad-manager/api/reference/v202605/OrderService.UserDomainTargetingError.Reason) [ProposalLineItemService](https://developers.google.com/ad-manager/api/reference/v202605/ProposalLineItemService.UserDomainTargetingError.Reason) [TargetingPresetService](https://developers.google.com/ad-manager/api/reference/v202605/TargetingPresetService.UserDomainTargetingError.Reason) [YieldGroupService](https://developers.google.com/ad-manager/api/reference/v202605/YieldGroupService.UserDomainTargetingError.Reason) **Dependencies** [UserDomainTargetingError](https://developers.google.com/ad-manager/api/reference/v202605/LineItemTemplateService.UserDomainTargetingError) ▼ **UserDomainTargetingError.Re...**


`ApiErrorReason` enum for user domain targeting error.

*** ** * ** ***

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

| Enumeration | Description |
|---|---|
| `INVALID_DOMAIN_NAMES` | Invalid domain names. Domain names must be at most 67 characters long. And must contain only alphanumeric characters and hyphens. |
| `UNKNOWN` | The value returned if the actual value is not exposed by the requested API version. |