Removing old network nodes

[keithd21]

Im sure there is a simple solution. Im trying to clean up my system. I have a bunch of network nodes with random ip address and names for work stations from previous owner. I go to remove them in configurator and get the node is referenced in another table and cant be deleted.
Thanks.​

 

[Wildbar]

They probably have workstations or printers or backup printers or something still assigned to them. Need to find the links and delete them. Only then you MAY be able to delete the node.