Get-RDRemoteApp fails to find deployment

I have created a rds deployment as follows

3x Server 2012r2
RDSH01 (RemoteApp Host)
RDSGW01 (is actually running web access)
RDSBR01 (Broker)

I created it using the add role wizard and everything is currently working as expected.

When I run get-RDremoteapp I get the following message

Get-RDRemoteApp : A Remote Desktop Services deployment does not exist on RDSH01.domain.com. This operation can be
performed after creating a deployment. For information about creating a deployment, run "Get-Help
New-RDVirtualDesktopDeployment" or "Get-Help New-RDSessionDeployment".+ CategoryInfo          : NotSpecified: (:) [Write-Error], WriteErrorException+ FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException,Get-RDRemoteApp

I have tried running this remotely and directly on each of the 3 machines above, however I get the same error message.

Any suggestions?