# Record ad impression events

> Record when players view ads in your game to track ad revenue and measure advertising performance.

Use the `adImpression` event to track what happens when you show an ad to a player.

## Send events manually

The `adImpression` event is a standard event with a predefined schema you must match to process and track the event. A special `AdImpressionParameters` object is provided by the Analytics SDK to fulfil the schema when recording an ad impression.

Use the following code to record a minimal `adImpression` event:

```cs
public void RecordAdImpression()
{
	var adImpression = new AdImpressionParameters
	{
		AdProvider = AdProvider.UnityAds,
		AdCompletionStatus = AdCompletionStatus.Completed,
		AdEcpmUsd = 12.34,
		AdStoreDstID = "CoolStore1337",
		PlacementID = "PLACEMENTID",
		PlacementName = "PLACEMENTNAME",
		PlacementType = AdPlacementType.BANNER
	};

	AnalyticsService.Instance.AdImpression(adImpression);
}
```

Some of these fields need to be populated with values that come from your ad mediation SDK, while others are specific to your game. See the breakdown:

| Property           | Description                                                                                                                                                                                                                                                 |
| ------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| AdProvider         | The ad network name or ID that served the ad, for example, UNITY, IRONSOURCE. This value is often passed on a per-impression level by your mediation provider or ad network. You might need to map it to a value in the `AdProvider` enum.                  |
| AdCompletionStatus | If the user watched the entire ad (COMPLETED), part of the ad (PARTIAL), or none of the ad (INCOMPLETE). Most applicable for interstitial ads which can be skipped by players.                                                                              |
| AdEcpmUsd          | eCPM ("effective Cost Per Mille": the revenue generated by 1000 impressions) in US Dollars. This value is often passed on a per-impression level by your mediation provider or ad network and used in ad LTV calculations. Populate this value if possible. |
| AdStoreDstID       | The store the player is directed to after cliking the ad, for example, Google Play, App Store, Amazon.                                                                                                                                                      |
| PlacementID        | The unique identifier for the placement as integrated in the game.                                                                                                                                                                                          |
| PlacementName      | The name of the placement as integrated in the game, for example, "Boosters" or "Daily Reward". This correlates with the placement name configured in your ad network or mediation provider.                                                                |
| PlacementType      | Indicates what type of ad is shown, for example, REWARDED, INTERSTITIAL or BANNER.                                                                                                                                                                          |

The `AdImpressionParameters` object contains a number of other fields that are less important, which you can also populate if you want.