---
title: MTLIOStatus.error
framework: metal
role: symbol
role_heading: Case
path: metal/mtliostatus/error
---

# MTLIOStatus.error

Indicates the GPU experienced a problem with the input/output command buffer.

## Declaration

```swift
case error
```

## See Also

### I/O command queue states

- [MTLIOStatus.pending](metal/mtliostatus/pending.md)
- [MTLIOStatus.complete](metal/mtliostatus/complete.md)
- [MTLIOStatus.cancelled](metal/mtliostatus/cancelled.md)