The format of the PROTOCOL statement is: PROTOCOL(protocol,netparm,retry,sysid,maxru,start/stop)
In this case, the CAICCI PROTOCOL statement was coded as:
PROTOCOL(TCPIPGW,7102,20,ASYSCCI) which sets the retry time to 20 minutes causing a 20 minute delay for the shutdown of CCITCPGW.
This value was detrimental to processing, and caused the "constrained" message.