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

The reasons for the target error.

*** ** * ** ***

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

| Enumeration | Description |
|---|---|
| `INVALID_HOUR` | Hour of day must be between 0 and 24, inclusive. |
| `INVALID_MINUTE` | Minute of hour must be one of 0, 15,30, 45. |
| `END_TIME_NOT_AFTER_START_TIME` | The [DayPart.endTime](https://developers.google.com/ad-manager/api/reference/v202605/AdRuleService.DayPart#endTime) cannot be after [DayPart.startTime](https://developers.google.com/ad-manager/api/reference/v202605/AdRuleService.DayPart#startTime). |
| `TIME_PERIODS_OVERLAP` | Cannot create day-parts that overlap. |
| `UNKNOWN` | The value returned if the actual value is not exposed by the requested API version. |