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# AdAttributionKitError

Values that describe ad attribution error conditions.

```
enum AdAttributionKitError
```

## Topics

### Enumeration Cases

[`case conversionTagNotSupported`](/documentation/AdAttributionKit/AdAttributionKitError/conversionTagNotSupported)

The postback update failed due to an unsupported use of conversion tag

[`case impressionExpired`](/documentation/AdAttributionKit/AdAttributionKitError/impressionExpired)

The attribution failed because the impression expired.

[`case invalidConversionTag`](/documentation/AdAttributionKit/AdAttributionKitError/invalidConversionTag)

The postback update failed due to an invalid conversion tag

[`case invalidImpressionJWSComponents`](/documentation/AdAttributionKit/AdAttributionKitError/invalidImpressionJWSComponents)

The attribution failed due to invalid JWS components.

[`case invalidImpressionJWSHeader`](/documentation/AdAttributionKit/AdAttributionKitError/invalidImpressionJWSHeader)

The attribution failed due to an invalid JWS header.

[`case invalidImpressionJWSPayload`](/documentation/AdAttributionKit/AdAttributionKitError/invalidImpressionJWSPayload)

The attribution failed due to an invalid JWS payload.

[`case invalidImpressionJWSSignature`](/documentation/AdAttributionKit/AdAttributionKitError/invalidImpressionJWSSignature)

The attribution failed due to an invalid JWS signature.

[`case missingAttributionView`](/documentation/AdAttributionKit/AdAttributionKitError/missingAttributionView)

The attribution failed due to a missing attribution view.

[`case unknown`](/documentation/AdAttributionKit/AdAttributionKitError/unknown)

The attribution failed due to an unknown, unrecoverable error.

### Instance Properties

[`var description: String`](/documentation/AdAttributionKit/AdAttributionKitError/description)

A string that describes the error.

## Relationships

### Conforms To

[`Error`](/documentation/Swift/Error)

[`Hashable`](/documentation/Swift/Hashable)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

[`Equatable`](/documentation/Swift/Equatable)

[`Sendable`](/documentation/Swift/Sendable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

---

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