# createOperationalCertificate(_:signingCertificate:operationalPublicKey:fabricID:nodeID:caseAuthenticatedTags:) ``` class func createOperationalCertificate(_ signingKeypair: any MTRKeypair, signingCertificate: Data, operationalPublicKey: SecKey, fabricID: NSNumber, nodeID: NSNumber, caseAuthenticatedTags: Set?) throws -> Data ``` --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)