- [JSON representation](https://developers.google.com/ad-manager/api/beta/reference/rest/v1/ForecastingLineItem.md.txt#SCHEMA_REPRESENTATION)

A `LineItem` or \[ProposalLineItem\]\[\] to be forecasted along with an optional override advertiser.

| JSON representation |
|---|
| ``` { "advertiser": string, // The following is a list of mutually exclusive fields. At most one of the // fields will be set in a response: "lineItem": { object (`LineItem`) } // End of mutually exclusive fields. } ``` |

| Fields ||
|---|---|
| `advertiser` | `string` Optional. The resource name of the advertiser `Company` for the prospective line item. Format: `networks/{networkCode}/companies/{companyId}` |
| The line item entry to be forecasted. Exactly one of the following fields must be set. The following is a list of mutually exclusive fields. At most one of the fields will be set in a response: ||
| `lineItem` | ``object (`LineItem`)`` Optional. The `LineItem` to be forecasted. |
| End of mutually exclusive fields. ||