# `MlPreviewDatafeedRequest` [interface-MlPreviewDatafeedRequest]

| Name | Type | Description |
| - | - | - |
| `body` | string | ({ [key: string]: any; } & { datafeed_id?: never; start?: never; end?: never; datafeed_config?: never; job_config?: never; }) | All values in `body` will be added to the request body. |
| `datafeed_config` | [MlDatafeedConfig](./MlDatafeedConfig.md) | The datafeed definition to preview. |
| `datafeed_id` | [Id](./Id.md) | A numerical character string that uniquely identifies the datafeed. This identifier can contain lowercase alphanumeric characters (a-z and 0-9), hyphens, and underscores. It must start and end with alphanumeric characters. NOTE: If you use this path parameter, you cannot provide datafeed or anomaly detection job configuration details in the request body. |
| `end` | [DateTime](./DateTime.md) | The end time when the datafeed preview should stop |
| `job_config` | [MlJobConfig](./MlJobConfig.md) | The configuration details for the anomaly detection job that is associated with the datafeed. If the `datafeed_config` object does not include a `job_id` that references an existing anomaly detection job, you must supply this `job_config` object. If you include both a `job_id` and a `job_config`, the latter information is used. You cannot specify a `job_config` object unless you also supply a `datafeed_config` object. |
| `querystring` | { [key: string]: any; } & { datafeed_id?: never; start?: never; end?: never; datafeed_config?: never; job_config?: never; } | All values in `querystring` will be added to the request querystring. |
| `start` | [DateTime](./DateTime.md) | The start time from where the datafeed preview should begin |