# MIDIEventPacketSysexBytesForGroup(_:_:_:) Gets MIDI 1.0 system-exclusive (SysEx) bytes on the indicated group. ``` func MIDIEventPacketSysexBytesForGroup(_ pkt: UnsafePointer, _ groupIndex: UInt8, _ outData: UnsafeMutablePointer?>) -> OSStatus ``` ## Parameters `pkt` A [`MIDIEventPacket`](/documentation/CoreMIDI/MIDIEventPacket) that contains universal MIDI packet (UMP) SysEx data. `groupIndex` The target group index, from `0` to `15`. `outData` When successful, a reference byte stream of extracted SysEx data. ## Return Value An `OSStatus` result code. --- 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)