---
title: "commissioning(_:failedWithError:metrics:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrcommissioningdelegate/commissioning(_:failedwitherror:metrics:)"
---

# commissioning(_:failedWithError:metrics:)

Notification that commissioning has failed.

## Declaration

```swift
optional func commissioning(_ commissioning: MTRCommissioningOperation, failedWithError error: any Error, metrics: MTRMetrics)
```