There's a Node License Limit, Really?
I found out the hard way - KACE comes with 100 licenses out of the box. Any additional licenses must be purchased through Dell. If you have more than 100 machines that will be managed with KACE, you will need to purchase additional licenses.
EDIT: If you are purchasing or have purchased a Kbox, be aware of how many licenses you have. In the K1000 this can be found in Settings -> Server Maintenance -> License Information. Click the yellow question mark icon, and the section will expand to reveal your license count.
Checking for duplicate inventory is definitely avoid way to keep node licenses under control. The KBOX comes with 100 licenses but any over that amount have to be purchased.