IT Server object not present in the control structure

While doing configuration of the “PNSM Basic Computer Monitoring Configuration” on the PNSM server error message “IT Server Object is not present in the control structure” pops up. But the IT server(IT OPC Server Network) object exists in the control structure

Did anyone had encountered similar issue or can anyone suggest possible cause and the resolution for the same.

System version:6.0.3.2

Thanks in Advance.