What did you add under Supported Intent to get rid of the warning?

This is a known issue according to Xcode release notes: https://developer.apple.com/documentation/xcode-release-notes/xcode-15_1-release-notes Running a WatchApp that requires the companion iOS app to be installed will result in an error if the run destination is set to a Watch via iPhone Simulator pair. (119640671) Workaround: Select a singular Watch Simulator run destination and then Run.