/ENCSUM not showing counts under TLS even though secured sessions exist

Products

• NetMaster Network Management for TCP/IP

Issue/Introduction

Looking at the /ENCSUM by Local Port output shows active connections but no specific counts under the TLS section. 
Port 923 is an encrypted only TN3270 server. So why in there no data in the TLS section counts?

Example:
NETM------------- TCP/IP : Encryption Summary by Local Port --------------TCPIP
Command ===>                                                   Scroll ===> CSR 
                                                                               
     Active Connections Secured ......... 0                                  
     Active Connections ................. 338                                  
                                            C=Connections S=Secured U=Unsecured
     Local          Active Secure ---- SSL ---- --------- TLS -------------    
      Port Taskname  Conns  Conns     v2     v3     v1   v1.1   v1.2   v1.3    
        22 SSHD         15      0      -      -      -      -      -      -    
        23 TN3270       61      0      -      -      -      -      -      -    
        80 WEBSERV       3      0      -      -      -      -      -      -    
       923 TN3270       11      0      -      -      -      -      -      -    
      1435 CICS          6      0      -      -      -      -      -      -    
     25000 DB2DIST      21      0      -      -      -      -      -      -    

Resolution

Verify that PTF LU11864 is applied.

Verify whether the NMSSI is configured to use zERT Detail records.

The online help screen (PF1) for the /ENCSUM screen states

The Encryption Summary by Task list displays the       
zERT-sourced counts of all connections, in all states, 
that the packet analyzer recognizes as using SSL, TLS, 
IPSec or SSH for a selected system or stack.           
                                                       
When ZERTDETAIL SMF collection is not enabled use      
/SECURE.S.