# MTRResponseCommandNameForID(_:_:) Resolve Matter response (server to client) command IDs into a descriptive string. ``` func MTRResponseCommandNameForID(_ clusterID: MTRClusterIDType, _ commandID: MTRCommandIDType) -> String! ``` ## Discussion For unknown IDs, a string ‘’ (if the cluster ID is not known) or ‘’ (if the cluster ID is known but the command ID is not known) will be returned. --- 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)