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# MTLIOError

The categories of errors for creating an input/output file handle.

```
struct MTLIOError
```

## Topics

### Error codes

[`urlInvalid`](/documentation/Metal/MTLIOError-swift.struct/urlInvalid)

An error that represents a problem with a file URL.

[`internal`](/documentation/Metal/MTLIOError-swift.struct/internal)

An error that represents a problem internal to the Metal framework.

[`MTLIOError.Code`](/documentation/Metal/MTLIOError-swift.struct/Code)

The error codes for creating an input/output file handle.

### Error domain

[`errorDomain`](/documentation/Metal/MTLIOError-swift.struct/errorDomain)

The current error domain for input/output command queues.

[`MTLIOErrorDomain`](/documentation/Metal/MTLIOErrorDomain)

The domain for input/output command queue errors.


---

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