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

The reasons for the target error.

*** ** * ** ***

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

| Enumeration | Description |
|---|---|
| `START_DATE_TIME_IS_IN_PAST` |   |
| `END_DATE_TIME_IS_IN_PAST` |   |
| `END_DATE_TIME_NOT_AFTER_START_TIME` |   |
| `END_DATE_TIME_TOO_LATE` |   |
| `UNKNOWN` | The value returned if the actual value is not exposed by the requested API version. |