Open the Targets page > Add Targets > Internal targets

Click 'View configuration keys'

Copy the 'Prefix'

Your DeviceName is comprised of your Prefix and your TargetName (no spaces!)

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DeviceName = Prefix_TargetName

For example if your prefix is DQEGBQUAAAc and you would like your target to show as paul-laptop in the portal, then your DeviceName would be:

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DQEGBQUAAAc_paul-laptop

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