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

The reasons for the frequency cap error.

*** ** * ** ***

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

| Enumeration | Description |
|---|---|
| `IMPRESSION_LIMIT_EXCEEDED` |   |
| `IMPRESSIONS_TOO_LOW` |   |
| `RANGE_LIMIT_EXCEEDED` |   |
| `RANGE_TOO_LOW` |   |
| `DUPLICATE_TIME_RANGE` |   |
| `DUPLICATE_TIME_UNIT` |   |
| `TOO_MANY_FREQUENCY_CAPS` |   |
| `UNKNOWN` | The value returned if the actual value is not exposed by the requested API version. |