The UEMCLI comand to modify the HLU number for a LUN only supports one LUN at a time.  In your example above, it appears you're attemtping to change the HLU for two different LUNs (sv_783 and sv_784) but you're using the same HLU 29 number - is that a typo? Only unique HLUs not is use are allowed.  glen
Hi All.   I am trying to modify Unity LUN HLU through API. it works fine for single LUN, But for multiple LUNs it fails though all these luns belong to same host.  I am getting following error message if try with more than one LUN:  "One or more specified parameters are invalid. (Error Code:0x5)"  Does Unity supports, HLU change for multiple LUNs through one API call?  JSON Request for single LUN HLU change :  {      "hostLunModifyList":[         {            "hostLUN":{               "id":"Host_9_sv_783_prod"          },          "hlu":29       }    ] }  Multiple LUNs:  {      "hostLunModifyList":[         {            "hostLUN":{               "id":"Host_9_sv_783_prod"          },          "hlu":29       },       {            "hostLUN":{               "id":"Host_9_sv_784_prod"          },          "hlu":29       }    ] }
REST API Issue with Modify HLU