---
title: THIRD_LEVEL_ADDRESSING
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 13.0+, macOS 10.3+]
path: iokit/scsicmd_report_luns_lun_entry/1477380-third_level_addressing
---

# THIRD_LEVEL_ADDRESSING

## Declaration

```occ
UInt16 THIRD_LEVEL_ADDRESSING;
```