# enum ForecastAdjustmentVolumeType (v202505)

**Service** **AdjustmentService** **Dependencies** [ForecastAdjustment](https://developers.google.com/ad-manager/api/reference/v202505/AdjustmentService.ForecastAdjustment) ▼ **ForecastAdjustmentVolumeType**

Options for how the volume settings of a [ForecastAdjustment](https://developers.google.com/ad-manager/api/reference/v202505/AdjustmentService.ForecastAdjustment) are defined.

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Namespace
:
    `https://www.google.com/apis/ads/publisher/v202505`

| Enumeration | Description |
|---|---|
| `UNKNOWN` | The value returned if the actual value is not exposed by the requested API version. |
| `DAILY_VOLUME` | Volume is defined by a series of daily ad opportunity counts. |
| `TOTAL_VOLUME` | Volume is defined by a single total ad opportunity count. |
| `HISTORICAL_BASIS_VOLUME` | Volume is defined by historical volume data. |