---
title: AdImpressionResponse
framework: skadnetworkforwebads
role: symbol
role_heading: Object
path: skadnetworkforwebads/adimpressionresponse
---

# AdImpressionResponse

The response you provide that contains a signed payload for a clicked web ad.

## Declaration

```data
object AdImpressionResponse
```

## Properties

ad_network_id: The ad network ID. You receive an ad network ID when you register to use SKAdNetwork. For more information, see Registering an ad network. itunes_item_id: The App Store app ID that the ad impression advertises. This is the same value the ad network provides in the attributable ad link. For more information, see Creating an attributable ad link. nonce: This value needs to match the value of source_nonce in the AdImpressionRequest. The value needs to be in the UUID string format. Provide the dash-separated representation of the source_nonce. signature: The cryptographic signature the ad network generates to sign the web ad. For more information, see Generating a signature for attributable web ads. source_domain: The effective top-level domain and one more preceding path component (eTLD+1) representation of the ad network serving the ad. This value needs to match the source_domain value you receive in the AdImpressionRequest. source_identifier: A four-digit value you use to measure the aspects of an advertising effort or campaign. timestamp: An integer that represents the UNIX time, in milliseconds, that you create this AdImpressionResponse. version: The SKAdNetwork version. Use version "4.0" or later. For version information, see SKAdNetwork release notes.

## Mentioned in

Creating an attributable ad link Generating a signature for attributable web ads

## Discussion

Discussion This is a response that you provide to the Get a Signed Web Ad Impression Payload endpoint. When you create an AdImpressionResponse, use the dash-separated string representation of the UUID, which you decode from the source_nonce in the AdImpressionRequest that you receive. important: The attributionSourceNonce in a web ad link, the source_nonce in an AdImpressionRequest, and the nonce in this response all represent the same UUID, but the encoding varies.

## See Also

### Providing the web ad signature and response

- [Generating a signature for attributable web ads](skadnetworkforwebads/generating-a-signature-for-attributable-web-ads.md)
- [signature](skadnetworkforwebads/signature.md)