---
title: "issueOperationalCertificate(forRequest:attestationInfo:controller:completion:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtroperationalcertificateissuer/issueoperationalcertificate(forrequest:attestationinfo:controller:completion:)"
---

# issueOperationalCertificate(forRequest:attestationInfo:controller:completion:)

## Declaration

```swift
func issueOperationalCertificate(forRequest csrInfo: MTROperationalCSRInfo, attestationInfo: MTRDeviceAttestationInfo, controller: MTRDeviceController, completion: @escaping @Sendable (MTROperationalCertificateChain?, (any Error)?) -> Void)
```

```swift
func issueOperationalCertificate(forRequest csrInfo: MTROperationalCSRInfo, attestationInfo: MTRDeviceAttestationInfo, controller: MTRDeviceController) async throws -> MTROperationalCertificateChain
```