post {protocol}://api.ws.sonos.com/control/api/{version}/groups//playback/skipToNextTrack
Use the skipToNextTrack command in the playback namespace to skip to the next track.
Not all audio sources allow multiple tracks. For example, when a group is streaming an Internet radio station, there is no next track to skip to. If you send a skipToNextTrack command when the audio source does not support multiple tracks, your app will receive an ERROR_PLAYBACK_FAILED, but the audio will continue playing.