Issue Description
The device does not have a network connection to receive the Disable Lost Mode command.
Troubleshooting Steps
Option 1: Share Internet from a computer
Connect the device to a macOS device.
On this Mac navigate to System Preferences > Sharing.
Highlight the Internet Sharing option and configure the following without enabling it since you cannot edit once it is enabled.
Enable Internet Sharing.
Confirm that the Disable Lost Mode Command is pending under the device's inventory record under History > Pending Commands.
Wait until the Disable Lost Mode command shows under the Complete Commands tab.
Option 2: Revive device with Apple Configurator
Connect device in Lost Mode to a macOS computer with Apple Configurator 2 installed.
Open Apple Configurator 2.
Click the Actions dropdown in the Menu Bar.
Hover over the Advanced tab and select Revive device.
After the process runs, we should be able to send a remote command to the iPad to disable Lost Mode.
More Resources
If neither of these options are successful, the device will need to be restored either using Apple Configurator (Actions > Restore) or in recovery mode.