---
title: kSCSIParallelMessage_HEAD_OF_QUEUE
framework: kernel
role: symbol
role_heading: Enumeration Case
path: kernel/scsiparallelmessages/kscsiparallelmessage_head_of_queue
---

# kSCSIParallelMessage_HEAD_OF_QUEUE

## Declaration

```occ
kSCSIParallelMessage_HEAD_OF_QUEUE = 0x21
```