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# MTLCommandEncoderErrorState

Possible error conditions for the command encoder’s commands.

```
enum MTLCommandEncoderErrorState
```

## Topics

### Getting the error state

[`MTLCommandEncoderErrorState.completed`](/documentation/Metal/MTLCommandEncoderErrorState/completed)

A state that indicates the GPU successfully executed the commands without any errors.

[`MTLCommandEncoderErrorState.pending`](/documentation/Metal/MTLCommandEncoderErrorState/pending)

An error state that indicates the GPU didn’t execute the commands.

[`MTLCommandEncoderErrorState.affected`](/documentation/Metal/MTLCommandEncoderErrorState/affected)

An error state that indicates the GPU failed to fully execute the commands because of an error.

[`MTLCommandEncoderErrorState.faulted`](/documentation/Metal/MTLCommandEncoderErrorState/faulted)

An error state that indicates the commands in the command buffer are the cause of an error.

[`MTLCommandEncoderErrorState.unknown`](/documentation/Metal/MTLCommandEncoderErrorState/unknown)

An error state that indicates the command buffer doesn’t know the state of its commands on the GPU.


---

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