# Available OS Updates
Get a list of available operating-system updates for a device. Removed: use the declarative management `com.apple.configuration.softwareupdate.enforcement.specific` configuration.
## Discussion
A device must have a total of `DownloadSize` + `InstallSize` bytes available to successfully install a software update. In macOS, execute the `ScheduleOSUpdateScan` command to update the results that this command returns. In iOS and tvOS, the list only contains the latest available updates.
Refer to the following sections to determine supported channels and requirements, and to see an example request and response.
### Command availability
|||
|--------------------------|-----------------------------|
|Device channel |iOS, macOS, Shared iPad, tvOS|
|User channel |N/A |
|Requires supervision |iOS, macOS, tvOS |
|Allowed in user enrollment|N/A |
|Required access right |AllowAppInstallation |
### Example request and response
**Request:**
```plist
Command
RequestType
AvailableOSUpdates
CommandUUID
0001_AvailableOSUpdates
```
**Response:**
```plist
AvailableOSUpdates
AllowsInstallLater
Build
17A576
DownloadSize
251607570
HumanReadableName
iOS 13.0
InstallSize
1809842176
IsCritical
ProductKey
iOSUpdate17A576
ProductName
iOS
RestartRequired
Version
13.0
CommandUUID
0001_AvailableOSUpdates
Status
Acknowledged
UDID
00008020-000915083C80012E
```
## Topics
### Commands and responses
[`AvailableOSUpdatesCommand`](/documentation/DeviceManagement/AvailableOSUpdatesCommand)
The command to get a list of available operating-system updates for a device. Removed: use the declarative management `com.apple.configuration.softwareupdate.enforcement.specific` configuration.
[`AvailableOSUpdatesResponse`](/documentation/DeviceManagement/AvailableOSUpdatesResponse)
A response from the device after it processes the command to get a list of available operating-system updates for a device. Removed: use the declarative management `com.apple.configuration.softwareupdate.enforcement.specific` configuration.
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