Trying to repair invalid Imei Samsung N900 getting this error below

Waiting ADB device... OK
Reading phone info...
Model: SM-N900
Android version: 4.3
Product code:
Phone version:
PDA version: N900XXUCMK2
CSC version: N900OJVCMJ3
CSC country code: SOUTH AFRICA
CSC sales code: XFA
HW version:
Phone S/N:
Modem board:
RF cal date:
Checking Super user right... true
Reading nv data... OK
Checking magic... SSNV not found
Done with Samsung Tool PRO v.23.2

Help me to solve I am stuck