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# MLModelError.Code

Information about a Core ML model error.

```
enum Code
```

## Topics

### Error codes

[`MLModelError.Code.featureType`](/documentation/CoreML/MLModelError-swift.struct/Code/featureType)

An error code for problems related to model features.

[`MLModelError.Code.parameters`](/documentation/CoreML/MLModelError-swift.struct/Code/parameters)

An error code for problems related to model parameters.

[`MLModelError.Code.modelCollection`](/documentation/CoreML/MLModelError-swift.struct/Code/modelCollection)

An error code for problems related to retrieving a model collection from the deployment system.

[`MLModelError.Code.modelDecryptionKeyFetch`](/documentation/CoreML/MLModelError-swift.struct/Code/modelDecryptionKeyFetch)

An error code for problems related to retrieving a model’s decryption key.

[`MLModelError.Code.modelDecryption`](/documentation/CoreML/MLModelError-swift.struct/Code/modelDecryption)

An error code for problems related to decrypting models.

[`MLModelError.Code.update`](/documentation/CoreML/MLModelError-swift.struct/Code/update)

An error code for problems related to on-device model updates.

[`MLModelError.Code.customLayer`](/documentation/CoreML/MLModelError-swift.struct/Code/customLayer)

An error code for problems related to custom layers.

[`MLModelError.Code.customModel`](/documentation/CoreML/MLModelError-swift.struct/Code/customModel)

An error code for problems related to custom models.

[`MLModelError.Code.io`](/documentation/CoreML/MLModelError-swift.struct/Code/io)

An error code for problems related to the system’s input or output.

[`MLModelError.Code.predictionCancelled`](/documentation/CoreML/MLModelError-swift.struct/Code/predictionCancelled)

An error code for problems related to canceling the prediction before it completes.

[`MLModelError.Code.generic`](/documentation/CoreML/MLModelError-swift.struct/Code/generic)

An error code for runtime issues that don’t apply to the other error codes.

### Error domain

[`MLModelErrorDomain`](/documentation/CoreML/MLModelErrorDomain)

The domain for Core ML errors.

[`errorDomain`](/documentation/CoreML/MLModelError-swift.struct/errorDomain)

### Creating a model error

[`init(rawValue:)`](/documentation/CoreML/MLModelError-swift.struct/Code/init(rawValue:))


---

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