---
title: "readAttributePartNumber(completion:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclusterbasicinformation/readattributepartnumber(completion:)"
---

# readAttributePartNumber(completion:)

## Declaration

```swift
func readAttributePartNumber(completion: @escaping @Sendable (String?, (any Error)?) -> Void)
```

```swift
func readAttributePartNumber() async throws -> String
```