CICS is experiencing Top Secret abends because of the MAXSIGN limit.
Release : 16.0
Component : CA Top Secret for z/OS
TSS6101I - TSS/CICS Signon Processing Delayed. MAXSIGN Limit has been Reached.
The MAXSIGN specifies the maximum number of queued signon requests that can be processed simultaneously, and has a range of 5 to 100 (inclusive). (The default value is 10.)
Here are sample commands of how to change the threshold limit:
TSS MODIFY FACILITY(cicsfac=MAXSIGN=(80,RETRY))
TSS MODIFY FACILITY(cicsfac=MAXSIGN=(90,KILL))
cicsfac = CICS facility being used: cicsprod or cicspay or ...
RETRY and KILL specify what to do if the limit is reached.
When RETRY is set and the threshold of the queue is reached, all additional attempts to sign on are requeued to CICS.
When KILL is set and the threshold of the queue is reached, all additional attempts to sign on or off are abended.
Controlling Simultaneous User Signon