The Network Management Interface (NMI) of VTAM has to be running. It is turned on as part of VTAM initialization using the SNAMGMT parameter set to YES.
A MODIFY VTAMOPTS can be used to dynamically turn it on. Once it is running, it creates a UNIX socket which is represented as a directory under USS which is /var/sock/SNAMGMT.
The network management interface (NMI) is returning the return code x'6F' (111) in a termination response.
This is an 'errno' value which equates to an EACCES error. It means the permission has been denied.
The help for the CSMxxxx commands lists the security requirements as follows:
Superuser authority or access to the following SAF resource is required:
Class Profile/Entity Name Access
-------- --------------------------- ----------
SERVAUTH IST.NETMGMT.sysname.SNAMGMT READ
'sysname' represents the MVS system name
Superuser authority is either a UID of 0 or READ access to the BPX.SUPERUSER entity of the FACILITY class.
If the command is displaying cross system data, the SYSVIEW Main Services Address Space must have access to these security
resources also. The message 'ZUSSR GET_CSM_STATS failed' in the field XSMsg could indicate that authority was not granted.
The one issuing the command is the one that needs to have the appropriate authority. It doesn't have to be superuser either.
It is superuser OR read access to security class SERVAUTH and the entity name of IST.NETMGMT.sysname.SNAMGMT
The best thing would be to grant whoever needs to use the CSM commands read access to that SAF resource not to give everyone superuser authority.