When bringing up a new system with TSS V16, the Resolver and TCPIP started tasks abended with SEC6.
IEF450I RESOLVER RESOLVER - ABEND=SEC6 U0000 REASON=0F01C008 537
IEF450I TCPIP TCPIP - ABEND=SEC6 U0000 REASON=0F01C008 589
Release : 16.0
Component : CA Top Secret for z/OS