Adding new devices using csvimport.exe doesn't work

Hi All,

Trying to add new devices - Used csvimport.exe to create the ims files then copying these to the ldscan folder but doesn't appear to work and the files then end up in ErrorScan folder.

The .ims files created are in this basic format.. 

Device Name = 1234567

Network - NIC Address = 12F12F233F56

I'm able to add new machines manually using bare metal server but wish add multiple in one go.

Any idea's/clues to what i am missing please?