PX4-Autopilot/docs/en/msg_docs/UnregisterExtComponent.md
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---
pageClass: is-wide-page
---
# UnregisterExtComponent (UORB message)
**TOPICS:** unregister_ext_component
## Fields
| Name | Type | Unit [Frame] | Range/Enum | Description |
| ---------------- | ---------- | ------------ | ---------- | --------------------------------------------------- |
| timestamp | `uint64` | | | time since system start (microseconds) |
| name | `char[25]` | | | either the mode name, or component name |
| arming_check_id | `int8` | | | arming check registration ID (-1 if not registered) |
| mode_id | `int8` | | | assigned mode ID (-1 if not registered) |
| mode_executor_id | `int8` | | | assigned mode executor ID (-1 if not registered) |
## Constants
| Name | Type | Value | Description |
| --------------------------------------------- | -------- | ----- | ----------- |
| <a id="#MESSAGE_VERSION"></a> MESSAGE_VERSION | `uint32` | 0 |
## Source Message
[Source file (GitHub)](https://github.com/PX4/PX4-Autopilot/blob/main/msg/versioned/UnregisterExtComponent.msg)
::: details Click here to see original file
```c
uint32 MESSAGE_VERSION = 0
uint64 timestamp # time since system start (microseconds)
char[25] name # either the mode name, or component name
int8 arming_check_id # arming check registration ID (-1 if not registered)
int8 mode_id # assigned mode ID (-1 if not registered)
int8 mode_executor_id # assigned mode executor ID (-1 if not registered)
```
:::