<!--
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    "iPadOS: 17.4.0 -",
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  "documentType" : "symbol",
  "framework" : "AdAttributionKit",
  "identifier" : "/documentation/AdAttributionKit/AppImpression/init(compactJWS:)",
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  "title" : "init(compactJWS:)"
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# init(compactJWS:)

Creates a new app impression with the provided compact JSON Web Signature (JWS).

```
init(compactJWS: String) async throws
```

## Parameters

`compactJWS`

A string that represents a JWS.

## Discussion

Create a new `AppImpression` by providing a compact string representation of the JWS as
the following example shows:

```swift
    do {
        let impression = try await AppImpression(compactJWS: compactJWS)
        print("Impression advertised item ID: \(impression.advertisedItemID)")
    }
    catch {
        print("Failed to decode impression: \(error)")
    }
```

---

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